AU2010201022A1

AU2010201022A1 - Methods of hormonal treatment utilizing contraceptive regimens with continuous estrogen administration

Info

Publication number: AU2010201022A1
Application number: AU2010201022A
Authority: AU
Inventors: Robert G. Bell; Carole S. Ben-Maimon; Lance J. Bronnenkant; Howard Hait; Beata Iskold; Kathleen Z. Reape
Original assignee: Duramed Pharmaceuticals Inc
Current assignee: Teva Womens Health Inc
Priority date: 2003-07-16
Filing date: 2010-03-17
Publication date: 2010-04-08
Anticipated expiration: 2024-07-16
Also published as: JP2007534622A; AU2004257772A1; NZ545130A; RU2010118424A; JP2011157389A; CA2532089C; WO2005007112A2; NZ574964A; US7855190B2; US20050143359A1; EP1648382A4; CN101001631B; AU2004257772B2; EP1648382A2; US20110124611A1; RU2403046C2; NZ585546A; WO2005007112A3; IL172959A0; CA2771944A1

Description

Australian Patents Act 1990 - Regulation 3.2A ORIGINAL COMPLETE SPECIFICATION STANDARD PATENT Invention Title "Methods of hormonal treatment utilizing contraceptive regimens with continuous estrogen administration" The following statement is a full description of this invention, including the best method of performing it known to us: C:\NRPortbl\DCC\KXG\2775486 1. DOC METHODS OF HORMONAL TREATMENT UTILIZING CONTRACEPTIVE REGIMENS WITH CONTINUOUS ESTROGEN ADMINISTRATION This is a divisional of Australian patent application No. 2004257772, the entire contents of which are incorporated herein by reference. BACKGROUND OF THE INVENTION Field of the Invention [0001] The present invention relates to methods of hormonal treatment that utilize contraceptive regimens involving administration of estrogen and progestin, followed by administration of estrogen. Related Art [0002] The human menstrual cycle involves a repetitive sequence of hormonal changes that result in episodic uterine bleeding. Normally, each menstrual cycle has a mean interval of about 21 to about 35 days, conventionally beginning with the first day of menstrual flow and ending on the day before the next onset of bleeding. Duration of the menstrual flow is usually about 2 to about 6 days with loss of about 20 to about 60 ml of blood. [00031 The menstrual cycle is divided into follicular and luteal phases, each corresponding to changes occurring in the ovary. These phases may also be described as proliferative or secretory, corresponding to changes observed in the uterine endometrium. Variations in the length of the cycle are usually due to alterations in the follicular phase, because the luteal phase length remains relatively constant at about 12 to about 16 days. [0004] During the follicular phase, several primary follicles are recruited for further growth and development. Granulosa cells in primary follicles possess follicle stimulating hormone (FSH) and estradiol receptors. Upon FSH stimulation, granulosa cells produce aromatase. This enzyme converts the androgens androstenedione and testosterone, made in response to luteinizing hormone (LH) by thecal cells, to estrone and estradiol, respectively. Granulosa cells respond to estradiol by undergoing mitosis to increase the -2 number of granulosa cells and estradiol production. By day 7 of the cycle, one enlarging primary follicle is selected by unknown processes to be the follicle that will release the oocyte at ovulation. [0005] The midcycle rise in plasma estradiol stimulates the large midcycle LH surge. This midcycle LH surge triggers resumption of meiosis within the oocyte and luteinization of the granulosa cells within the preovulatory follicle. Immediately before ovulation, the outer follicular wall begins to dissolve and an oocyte is released approximately 24 to 36 hours from the onset of the LH surge. [0006] After ovulation, granulosa cells and the surrounding theca cells enlarge, accumulate lipid, and become transformed into lutein cells. This begins the luteal phase of the menstrual cycle. These cells form a new vascularized structure called the corpus luteum, which secretes estradiol and progesterone. LH maintains the corpus luteum during the luteal phase and, acting via the adenyl cyclase system, stimulates progesterone production. If pregnancy does not occur, lutein cells degenerate, and diminished hormone secretion precedes menstruation. Menstruation is immediately followed by the onset of another menstrual cycle. [0007] Because endometrial proliferation serves to prepare the uterus for an impending pregnancy, manipulation of hormones and of the uterine environment can provide contraception. For example, estrogens are known to decrease FSH secretion by feedback inhibition. Under certain circumstances, estrogens can also inhibit LH secretion, once again by negative feedback. Under normal circumstances, the spike of circulating estrogen found just prior to ovulation induces the surge of gonadotropic hormones that occurs just prior to and results in ovulation. High doses of estrogen immediately post-coitally also can prevent conception probably due to interference with implantation. [0008] Progestins can also provide contraception. Endogenous progesterone after estrogen is responsible for the progestational changes of the endometrium and the cyclic changes of cells and tissue in the cervix and the vagina. Administration of progestin makes the cervical mucus thick, tenacious and cellular which is believed to impede spermatozoal transport. Administration -3 of progestin also inhibits luteinizing hormone secretion and blocks ovulation in humans. [00091 The most prevalent form of oral contraception is a pill that combines both an estrogen and a progestin, a so-called combined oral contraceptive preparation. Alternatively, there are contraceptive preparations that comprise progestin only. However, the progestin-only preparations have a more varied spectrum of side effects than do the combined preparations, especially more breakthrough bleeding. As a result, the combined preparations are the preferred oral contraceptives in use today (Sheth et al., Contraception 25:243 (1982)). (00101 Whereas the conventional 21 day pill packs with a 7 day "pill free" of placebo interval worked well when oral contraceptives were of higher dosage, as the doses have come down, for both the estrogen and progestin components, bleeding problems have increased in frequency, especially in the early months of oral contraceptive use, but even persistently so in some patients. [00111 There exists a need for contraceptives that reduce bleeding problems and/or have additional benefits for women. SUMMARY OF THE INVENTION [00121 The invention is directed to a method of reducing breakthrough bleeding in a female in need thereof, the method comprising administering to the female a combination of estrogen and progestin for a period of about 81 to about 110 consecutive days, followed by administration of estrogen for a period of about 2 to about 10 consecutive days. [0013] The invention is directed to a method of inducing regular, predictable withdrawal bleeding in a female in need thereof, the method comprising administering to the female a combination of estrogen and progestin for a period of about 81 to about 110 consecutive days, followed by administration of estrogen for a period of about 2 to about 10 consecutive days. [00141 The invention is directed to a method of reducing frequency of onset of a menstrual cycle or withdrawal bleed in a female in need of delayed or -4 reduced menstruation, the method comprising administering to the female a combination of estrogen and progestin for a period of about 81 to about 110 consecutive days, followed by administration of estrogen for a period of about 2 to about 10 consecutive days. [00151 The invention is directed to a method of inducing amenorrhea in a female in need thereof, the method comprising administering to the female a combination of estrogen and progestin for a period of about 81 to about 110 consecutive days, followed by administration of estrogen for a period of about 2 to about 10 consecutive days. [0016] The invention is directed to a method of minimizing uterine bleeding in a female in need thereof, the method comprising administering to the female a combination of estrogen and progestin for a period of about 81 to about 110 consecutive days, followed by administration of estrogen for a period of about 2 to about 10 consecutive days. [0017] The invention is directed to a method of treating an ovarian cyst, uterine leiomyoma (fibroid tumor), or treating Polycystic Ovarian Disease in a female in need thereof, the method comprising administering to the female a combination of estrogen and progestin for a period of more than 20 consecutive days, followed by administration of estrogen for a period of about 2 to about 10 consecutive days. [0018] The invention is directed to a method of treating hirsutism in a female in need thereof, the method comprising administering to the female a combination of estrogen and progestin for a period of more than 20 consecutive days, followed by administration of estrogen for a period of about 2 to about 10 consecutive days. [0019] The invention is directed to a method of decreasing risk of iron deficiency anemia in a female in need thereof, the method comprising administering to the female a combination of estrogen and progestin for a period of about 81 to about 110 consecutive days, followed by administration of estrogen for a period of about 2 to about 10 consecutive days. [0020] The invention is directed to a method of treating a menstrual disorder in a female in need thereof, the method comprising administering to the -5 female a combination of estrogen and progestin for a period of about 81 to about 110 consecutive days, followed by administration of estrogen for a period of about 2 to about 10 consecutive days. [00211 The invention is directed to a method of treating acne in a female in need thereof, the method comprising administering to the female a combination of estrogen and progestin for a period of more than 20 consecutive days, followed by administration of estrogen for a period of about 2 to about 10 consecutive days. 10022] The invention is directed to a method of treating endometriosis in a female in need thereof, the method comprising administering to the female a combination of estrogen and progestin for a period of more than 20 consecutive days, followed by administration of estrogen for a period of about 2 to about 10 consecutive days. 10023] The invention is directed to a method of reducing the risk of endometrial cancer in a female in need thereof, the method comprising administering to the female a combination of estrogen and progestin for a period of more than 20 consecutive days, followed by administration of estrogen for a period of about 2 to about 10 consecutive days. [0024] The invention is directed to a method of reducing the risk of ovarian cancer in a female in need thereof, the method comprising administering to the female a combination of estrogen and progestin for a period more than 20 consecutive days, followed by administration of estrogen for a period of about 2 to about 10 consecutive days. [0025] The invention is directed to a method of treating breast disease in a female in need thereof, the method comprising administering to the female a combination of estrogen and progestin for a period of more than 50 consecutive days, followed by administration of estrogen for a period of about 2 to about 10 consecutive days. [0026] The invention is directed to a method of reducing the risk of colorectal cancer in a female in need thereof, the method comprising administering to the female a combination of estrogen and progestin for a period more than 20 -6 consecutive days, followed by administration of estrogen for a period of about 2 to about 10 consecutive days. [00271 The invention is directed to a method of treating an infection in a female in need thereof, the method comprising administering to the female a combination of estrogen and progestin for a period of more than 20 consecutive days, followed by administration of estrogen for a period of about 2 to about 10 consecutive days. [0028] The invention is directed to a method of treating temporomandibular disorder in a female in need thereof, the method comprising administering to the female a combination of estrogen and progestin for a period of more than 20 consecutive days, followed by administration of estrogen for a period of about 2 to about 10 consecutive days. 100291 The invention is directed to a method of treating a catamenial symptom in a female in need thereof, the method comprising administering to the female a combination of estrogen and progestin for a period of more than 20 consecutive days, followed by administration of estrogen for a period of about 2 to about 10 consecutive days. [0030] The invention is directed to a method of treating non-menstrual related headache in a female in need thereof, the method comprising administering to the female a combination of estrogen and progestin for a period of more than 20 consecutive days, followed by administration of estrogen for a period of about 2 to about 10 consecutive days. [00311 The invention is directed to a method of treating non-menstrual related nausea in a female in need thereof, the method comprising administering to the female a combination of estrogen and progestin for a period of more than 20 consecutive days, followed by administration of estrogen for a period of about 2 to about 10 consecutive days. [0032] The invention is directed to a method of treating non-menstrual related depression in a female in need thereof, the method comprising administering to the female a combination of estrogen and progestin for a period of more than 20 consecutive days, followed by administration of estrogen for a period of about 2 to about 10 consecutive days.

-7 [00331 The invention is directed to a method of increasing contraceptive effectiveness in a higher weight female in need thereof, the method comprising administering to the female a combination of estrogen and progestin for a period of more than 50 consecutive days, followed by administration of estrogen for a period of about 2 to about 10 consecutive days; wherein the higher weight female weighs about 70 kg or more [00341 The invention is directed to a method of increasing fertility in a female in need thereof, the method comprising (i) administration to the female of a combination of estrogen and progestin for a period of more than 20 consecutive days, followed by administration of estrogen for a period of about 2 to about 10 consecutive days; (ii) discontinuation of administration of the combination of estrogen and progestin for the period of more than 20 consecutive days and of estrogen for the period of about 2 to about 10 consecutive days; and (iii) optional administration to the female of an ovulation-inducing agent during the discontinuation of administration of the combination of estrogen and progestin for the period of more than 20 consecutive days and of estrogen for the period of about 2 to about 10 consecutive days. [00351 The invention is directed to a method of treating or diminishing a perimenopausal symptom in a female in need thereof, the method comprising administering to the female a combination of estrogen and progestin for a period of more than 20 consecutive days, followed by administration of estrogen for a period of about 2 to about 10 consecutive days. [00361 The invention is directed to a method for treating a condition resulting from menopausal estrogen decline in a menopausal female, the method comprising administering to the female a combination of estrogen and progestin for a period of more than 20 consecutive days, followed by administration of estrogen for a period of about 2 to about 10 consecutive days. 100371 The invention is directed to a method of treating hypoestrogenism in a female in need thereof, the method comprising administering to the female a combination of estrogen and progestin for a period of more than 20 consecutive days, followed by administration of estrogen for a period of about 2 to about 10 consecutive days. [0038] The invention is directed to a method of treating a menopausal disorder in a female in need thereof, the method comprising administering to the female a combination of estrogen and progestin for a period of more than 20 consecutive days, followed by administration of estrogen for a period of about 2 to about 10 consecutive days. 100391 The invention is directed to a method of maintaining bone density or preventing loss of bone density in a female in need thereof, the method comprising administering to the female a combination of estrogen and progestin for a period of more than 20 consecutive days, followed by administration of estrogen for a period of about 2 to about 10 consecutive days. 10040] The invention is directed to a method of treating a female in need of hormone replacement therapy, the method comprising administering to the female a combination of estrogen and progestin for a period of more than 20 consecutive days, followed by administration of estrogen for a period of about 2 to about 10 consecutive days. [00411 The invention is further directed to each of the methods listed above, wherein an antidepressant is administered (i) in combination with the estrogen for the period of about 2 to about 10 consecutive days, (ii) continuously, (iii) intermittently, (iv) one time during the menstrual cycle, or (v) once weekly. [00421 The invention is further directed to each of the methods listed above, wherein the estrogen that is administered in combination with progestin for a period of more than 20 consecutive days or for more than 50 consecutive days is administered in a daily amount equivalent to about 5 ig to about 50 pg of ethinyl estradiol, and the progestin that is administered in combination with estrogen for a period of more than 20 consecutive days or for more than 50 consecutive days is administered in a daily amount equivalent to about 0.05 mg to about 1.5 mg of levonorgestrel. The invention is also directed to each of the methods listed above, wherein the estrogen that is administered for a -9 period of about 2 to about 10 days is administered in a daily amount equivalent to about 5 jig to about 50 ptg of ethinyl estradiol. [00431 The invention is further directed to each .of the methods listed above, wherein the combination of estrogen and progestin is administered for a period of 60 to 110 consecutive days, for a period of 81 to 110 consecutive days, for a period of 81 to 89 consecutive days, or for a period 21 to 26 consecutive days. [0044] The invention is also directed to each of the methods listed above, wherein the female is a perimenopausal female or a menopausal female. BRIEF DESCRIPTION OF THE DRAWINGS [00451 Figure 1 shows the distribution of bleeding and spotting reported by patients administered the DP3-84/30 regimen during the first clinical study described in Example 7. [0046] Figure 2 shows the distribution of bleeding and spotting reported by patients administered the DP3-84/10 regimen during the first clinical study described in Example 7. [00471 Figure 3 shows the distribution of bleeding and spotting reported by patients administered the DP3-84/30 regimen during the second clinical study described in Example 7. [00481 Figure 4 shows the distribution of bleeding and spotting reported by patients administered the DP3-84/10 regimen during the second clinical study described in Example 7. [0049] Figure 5 shows the distribution of bleeding and spotting reported by patients administered the DP3-25/30 regimen during the second clinical study described in Example 7. [00501 Figure 6 shows the plasma concentration of Follicle Stimulating Hormone (FSH) in patients during daily administration of levonorgestrel (0.150 mg)/ethinyl estradiol (0.030 mg) tablets for 84 consecutive days, followed by daily administration of ethinyl estradiol (0.030 mg) tablets for 7 days, as described in Example 10. Figure 6 also shows the plasma concentration of FSH up to about 56 days (Day 147) after completion of administration, during which no hormone was administered to the patients.

-10 [00511 Figure 7 shows the plasma concentration of estradiol in patients during daily administration of levonorgestrel (0.150 mg)/ethinyl estradiol (0.030 mg) tablets for 84 consecutive days, followed by daily administration of ethinyl estradiol (0.030 mg) tablets for 7 days, as described in Example 10. Figure 7 also shows the plasma concentration of estradiol up to about 56 days (Day 147) after completion of administration, during which no hormone was administered to the patients. [0052] Figure 8 shows the plasma concentration of Luteinizing Hormone (LH) in patients during daily administration of levonorgestrel (0.150 mg)/ethinyl estradiol (0.030 mg) tablets for 84 consecutive days, followed by daily administration of ethinyl estradiol (0.030 mg) tablets for 7 days, as described in Example 10. Figure 8 also shows the plasma concentration of LH up to about 56 days (Day 147) after completion of administration, during which no hormone was administered to the patients. [0053] Figure 9 shows the plasma concentration of free testosterone in patients during daily administration of levonorgestrel (0.150 mg)/ethinyl estradiol (0.030 mg) tablets for 84 consecutive days, followed by daily administration of ethinyl estradiol (0.030 mg) tablets for 7 days, as described in Example 10. Figure 9 also shows the plasma concentration of free testosterone up to about 56 days (Day 147) after completion of administration, during which no hormone was administered to the patients. [0054] Figure 10 shows the plasma concentration of total testosterone in patients during daily administration of levonorgestrel (0.150 mg)/ethinyl estradiol (0.030 mg) tablets for 84 consecutive days, followed by daily administration of ethinyl estradiol (0.030 mg) tablets for 7 days, as described in Example 10. Figure 10 also shows the plasma concentration of total testosterone up to about 56 days (Day 147) after completion of administration, during which no hormone was administered to the patients.

- 11 DETAILED DESCRIPTION OF THE INVENTION [0055] The present invention provides estrogen/progestin contraceptive regimens that are useful in the treatment of a variety of conditions and disorders occurring in females of child-bearing age, in peri-menopausal females, and/or in menopausal females. [00561 In accordance with the present invention, a female is administered an estrogen/progestin contraceptive regimen of a combined dosage form of estrogen and progestin (or progestogen) for a period of more than 20 consecutive days, followed by administration of estrogen for a period of about 2 to about 10 days, in which the daily dosage amounts of estrogen and progestin are equivalent to about 5 pg to about 50 ig of ethinyl estradiol and equivalent to about 0.02 mg to about 1.5 mg of levonorgestrel, respectively ("bridged regimen"). [0057] In some aspects of the invention, the daily dosage amount of estrogen is equivalent to about 5 pg to about 25 jg of ethinyl estradiol. In other aspects of the invention, the daily dose of estrogen is equivalent to about 25 jg to about 40 jig of ethinyl estradiol. In yet other aspects of the invention, the daily dose of estrogen is equivalent to about 10 pg to about 30 pg of ethinyl estradiol. In some aspects of the invention, the daily dose of estrogen is equivalent to about 20 jg of ethinyl estradiol. In other aspects, it is equivalent to about 30 pg of ethinyl estradiol. [0058] In some aspects of the invention, the daily dosage amount of progestin is equivalent to about 0.01 mg to about 0.25 mg of levonorgestrel. In other aspects of the invention, the daily dose of progestin is equivalent to about 0.05 mg to about 0.20 mg of levonorgestrel. In yet other aspects of the invention, the daily dose of progestin is equivalent to about 0.1 mg of levonorgestrel. In some aspects, it is equivalent to about 0.15 mg levonorgestrel. [0059] In some aspects of the invention, the combined dosage form of estrogen and progestin is administered for more than 20 consecutive days, or is administered for more than 50 consecutive days. In other aspects of the - 12 invention, the combined dosage form is administered for about 21 to about 26 consecutive days, for about 22 to about 25 consecutive days, or is administered for about 25 to about 26 consecutive days. In some aspects of the invention, the combined dosage form is administered for about 25 consecutive days. In yet other aspects of the invention, the combined dosage form is administered for about 60 to about 110 consecutive days, or, alternatively, for about 81 to about 110 consecutive days, or for about 81 to about 89 consecutive days. In some aspects of the invention, the period of administration can be at least 81 consecutive days, or at least 84 consecutive days. In other aspects of the invention, the period of administration can be about one year, more than one year but less than two years, two years, or more than two years. [0060] The extended estrogen/progestin contraceptive regimen of the invention refers to the bridged regimen disclosed herein in which a combined dosage form of estrogen and progestin (or progestogen) is administered to a female for a period of more than 50 consecutive days, followed by administration of estrogen for a period of about 2 to about 10 days, in which the daily dosage amounts of estrogen and progestin are equivalent to about 5 pg to about 50 tg of ethinyl estradiol and equivalent to about 0.02 mg to about 1.5 mg of levonorgestrel, respectively ("bridged extended cycle regimen"). [0061] In the disclosed bridged regimen, the combined dosage form of estrogen and progestin can be administered monophasically, biphasically, triphasically, or multiphasically. As used herein, "monophasic" refers to the continuous use of one particular dose of estrogen and progestin during the period of administration of the combined dosage form of estrogen and progestin. "Biphasic" refers to administration of a first continuous dose of estrogen and progestin during a first portion of the period of administration of the combined dosage form of estrogen and progestin, with administration of a second continuous dose of estrogen and progestin during the second portion of the period of administration of the combined dosage form. "Triphasic" refers to administration of first, second, and third continuous doses of estrogen and progestin during the first, second, and third portions, respectively, of the - 13 period of administration of the combined dosage form of estrogen and progestin. "Multiphasic" refers to administration of four or more continuous doses of estrogen and progestin during the first, second, third, and fourth or more portions, respectively, of the period of administration of the combined dosage form of estrogen and progestin. 100621 The period of administration of the combined dosage form of estrogen and progestin is followed by administration of estrogen for a period of about 2 to about 10 consecutive days ("unopposed estrogen interval"). In other aspects of the invention, the unopposed estrogen interval is about 5 to about 8 consecutive days, about 2 to about 7 consecutive days, or about 3 to about 7 consecutive days. In yet other aspects, it is about 7 days. In some aspects of the invention, the unopposed estrogen interval is about 2 to about 5 consecutive days, or about 2 to about 3 consecutive days. In some aspects of the invention, the unopposed estrogen interval is about 3 days. [00631 The daily dosage amount of estrogen administered during the unopposed estrogen interval is equivalent to about 5 pg to about 50 pg of ethinyl estradiol. In some aspects of the invention, the daily dosage amount of estrogen is equivalent to about 5 pg to about 25 pg of ethinyl estradiol. In other aspects of the invention, the daily dose of estrogen is equivalent to about 25 pg to about 40 pg of ethinyl estradiol, or is equivalent to about 20 pg to about 40 pg of ethinyl estradiol. In some aspects, it is equivalent to about 30 pg of ethinyl estradiol. In yet other aspects of the invention, the daily dose of estrogen is equivalent to about 5 pg to about 15 pg of ethinyl estradiol. In other aspects of the invention, the daily dose of estrogen is equivalent to about 10 pg of ethinyl estradiol. [00641 For example, on a schedule of 84 consecutive days of administration of estrogen and progestin, followed by 7 consecutive days of administration of estrogen, there are only four treatments and menstrual cycles per year. As another example, on a schedule of 177 consecutive days of administration of estrogen and progestin, followed by 7 consecutive days of administration of estrogen, there are only two treatments and menstrual cycles per year. In yet another example,.on a schedule of 25 consecutive days of administration of -14 estrogen and progestin, followed by 3 consecutive days of administration of estrogen, there are thirteen treatments and menstrual cycles per year. [00651 The bridged regimen is optionally administered with an antidepressant. In some aspects of the invention, the antidepressant is administered in combination with estrogen during the unopposed estrogen interval of the bridged regimen. In other aspects of the invention, the antidepressant is administered continuously throughout the regimen, or, in yet other aspects of the invention, the antidepressant is administered intermittently. For example, in one aspect of the invention, the antidepressant is administered intermittently during the late luteal phase, which is typically one to two weeks before menses. In yet other aspects of the invention, the antidepressant is administered one time during a menstrual cycle, or once weekly. 100661 The bridged regimen, or the bridged extended cycle regimen, disclosed herein can be used as a method of female contraception. Thus, the invention is directed to a method of contraception in a female in need thereof by administering to the female the bridged regimen, or the bridged extended cycle regimen, disclosed herein. The female can be, for example, of childbearing age or peri-menopausal. [00671 However, the bridged regimen, or the bridged extended cycle regimen, is also useful as a method of treating a variety of conditions and disorders in females. Thus, the bridged regimen, or the bridged extended cycle regimen, can be used as a method of providing contraception to a female for the treatment of a condition or disorder, or as a method of providing contraception and treating a condition or disorder in a female. Such conditions and disorders are described below and include, but are not limited to: breakthrough bleeding; irregular withdrawal bleeding; menstrual bleeding disorders; symptoms associated with an ovarian cyst, uterine leiomyoma (fibroid tumor), and/or Polycystic Ovarian Syndrome; hirsutism; iron deficiency anemia; menstrual disorders; acne; endometriosis; endometrial cancer; ovarian cancer; benign breast disease; infections; ectopic pregnancy; temporomandibular disorder; catamenial symptoms; -non-menstrual related headache, nausea, and/or - 15 depression; peri-menopausal symptoms; hypoestrogenism; menopausal disorders; and loss of bone density. [0068] The invention, therefore, is also directed to a method of providing contraception to a female for the treatment of a condition or disorder, wherein the female is in need of treatment for the condition or disorder, by administering to the female the bridged regimen, or the bridged extended cycle regimen, disclosed herein. The female can be, for example, of childbearing age, pen-menopausal, or menopausal. [0069] The invention is also directed to a method of providing contraception and treating a condition or disorder in a female, wherein the female is in need of both contraception and treatment of the condition or disorder, by administering to the female the bridged regimen, or the bridged extended cycle regimen, disclosed herein. The female can be, for example, of childbearing age or peri-menopausal. [00701 The bridged regimen or bridged extended cycle regimen disclosed herein includes administration to a female beginning at Day 1 of a menstrual cycle that is defined as beginning at the first day of menstrual flow. Alternatively, the bridged regimen or bridged extended cycle regimen disclosed herein can also include administration to a female beginning at Day 1 of a menstrual cycle that is defined as beginning with the day after the ending of the menstrual flow. Alternatively, the bridged regimen or bridged extended cycle regimen disclosed herein also can include administration to a female beginning at Day I of a menstrual cycle that is defined as beginning with any day within the menstrual cycle. [0071] As used herein, "female" refers to any animal classified as a mammal, including humans and non-humans, such as, but not limited to, domestic and farm animals, zoo animals, sports animals, and pets. [0072] "Peri-menopausal female" refers to a woman who has not yet definitely arrived at menopause but who is experiencing symptoms associated with menopause. "Peri-menopause" means "about or around the time of menopause." It encompasses the years preceding the last menstrual period during which ovarian function declines and ultimately ceases and can include -16 the presence of symptoms and irregular cycles. "Menopausal female" refers to a woman who has definitely arrived at menopause and may be experiencing symptoms associated with menopause. Menopause or post-menopause is the permanent cessation of menstruation after the loss of ovarian activity and is generally defined clinically as the absence of menstruation for about one year. Menopause may occur naturally in a woman or it may be artificially induced, e.g., through surgical or chemical means. For example, removal of the ovaries, which can occur, e.g., through hysterectomy, frequently leads to symptoms associated with menopause. [00731 The terms "treat" and "treatment" refer to both therapeutic treatment and prophylactic or preventative measures, wherein the object is to prevent or slow down (lessen) an undesired physiological condition, disorder or disease, or obtain beneficial or desired clinical results. For purposes of this invention, beneficial or desired clinical results include, but are not limited to, alleviation of symptoms; diminishment of extent of condition, disorder or disease; stabilized (i.e., not worsening) state of condition, disorder or disease; delay in onset or slowing of condition, disorder or disease progression; amelioration of the condition, disorder or disease state, remission (whether partial or total), whether detectable or undetectable; or enhancement or improvement of condition, disorder or disease. Treatment includes eliciting a clinically significant response, without excessive levels of side effects. Treatment also includes prolonging survival as compared to expected survival if not receiving treatment. [0074] The term "continuous" or "consecutive" in reference to "administration" means that the frequency of administration is at least once daily. Note, however, that the frequency of administration can be greater than once daily and still be "continuous," e.g., twice or even three times daily, as long as the dosage levels as specified herein are not exceeded. [0075] The term "dosage level," "daily dosage amount," or "daily dose" means the total amount of estrogen or progestin administered per day. Thus, for example, "continuous administration" of a progestin to a woman at a "dosage level" of 30 pg means that the woman receives a total of 30 pLg of - 17 progestin on a daily basis, whether the progestin is administered as a single 30 4g dose or, e.g., three separate 10 ptg doses. A conventional means of continuously administering an estrogen or progestin is as a single daily oral dose at the prescribed dosage level. 100761 For each of the disclosed methods of the invention, the effect of administration of the bridged regimen, and/or bridged extended cycle regimen, with respect to the specified condition (e.g., inducing the specified condition in the female, reducing the occurrence of the condition, minimizing the condition, or treating the condition or disorder) can be evaluated in comparison to each other, to the condition or disorder exhibited by the female after administration of a standard 28-day contraceptive regimen other than the disclosed bridged regimen, after administration of an extended cycle contraceptive regimen other than the disclosed bridged extended cycle regimen, and/or after administration of no contraceptive regimen. For example, the effect of administering the bridged regimen to treat a menstrual bleeding disorder can be evaluated by comparing the occurrence and/or severity of the bleeding disorder in females suffering from the disorder who have been administered the bridged regimen with the occurrence and/or severity of the bleeding disorder in females suffering from the disorder who have not been treated with a contraceptive regimen, or with females suffering from the disorder who have been administered a contraceptive regimen not disclosed in the present invention. The effect of administering the bridged regimen and/or bridged extended cycle regimen of the invention can also be evaluated by comparing the occurrence and/or severity of a condition in a female before and after administration of the bridged regimen and/or bridged extended cycle regimen of the invention, or by evaluating the condition of the female during the course of one or more cycles. [00771 When the period of continuous administration of estrogen and progestin, which in some aspects of the invention is more than 50 consecutive days, is followed by administration of estrogen for a period of about 2 to about 10 consecutive days, the bridged regimen is characterized by a reduced incidence of breakthrough or unscheduled bleeding. It has been observed that - 18 the incidence of breakthrough bleeding decreases with continued use of the disclosed bridged extended cycle regimen so that by the fourth cycle, it is comparable to that observed with the traditional 28-day regimen. Further continued use of the bridged extended cycle regimen can lead to even further reduction in the incidence of breakthrough bleeding. Thus, the present invention is directed to a method of reducing breakthrough bleeding in a female in need thereof by administering to the female the bridged regimen, or the bridged extended cycle regimen, disclosed herein. The female can be, for example, of childbearing age or peri-menopausal. [00781 The invention is also directed to a method of providing contraception and reducing breakthrough bleeding in a female in need thereof by administering to the female the bridged regimen, or the bridged extended cycle regimen, disclosed herein. For example, the female can be of childbearing age or peri-menopausal. [00791 The invention is directed to a method of inducing regular, predictable withdrawal bleeding in a female in need thereof by administering to the female the bridged regimen, or the bridged extended cycle regimen, disclosed herein. The female can be, for example, of childbearing age or peri-menopausal. Administration of the bridged regimen is useful in controlling menstrual cycles in a female by inducing regular, predictable withdrawal bleeding. By suppressing ovulation and delivering estrogen and progesterone in a programmed fashion, the bridged regimen can establish or restore synchrony to the endometrium. This is particularly useful in the treatment of heavy or intermenstrual bleeding. The resulting predictable timing and shorter duration of bleeding are especially advantageous to peri-menopausal women, who often experience irregular menstrual cycles. [00801 The invention is also directed to a method of providing contraception and inducing regular, predictable withdrawal bleeding in a female in need thereof by administering to the female the bridged regimen, or the bridged extended cycle regimen, disclosed herein. The female can be, for example, a female of childbearing age or a peri-menopausal female.

-19 10081] The invention is directed to a method of reducing frequency or delaying onset of a menstrual cycle in a female in need of delayed or reduced menstruation by administering to the female the bridged regimen, or the bridged extended cycle regimen, disclosed herein. The female can be, for example, of childbearing age or peri-menopausal. For example, particular groups or subpopulations of women can benefit from reduced menstruation, such as women enlisted in the U.S. military and women athletes. Control of the menstrual cycle, or even induction of amenorrhea using the extended bridged cycle regimen, can be an advantage for women on active duty. The non-contraceptive benefits resulting from use of the bridged extended cycle regimen, such as reduction in dysmenorrhea, premenstrual syndrome, menorrhagia, iron deficiency anemia, and ability to control timing of withdrawal bleeding, can be desirable and advantageous to women athletes as well. The term "amenorrhea" refers to the absence of bleeding during one or more menstrual cycles of a female. The term encompasses the absence of bleeding and/or spotting during the unopposed estrogen interval of the bridged regimen of the present invention when administered to a female, as well as the absence of bleeding or spotting throughout an entire menstrual cycle during administration of the bridged regimen. [00821 The invention is also directed to a method of providing contraception and reducing frequency or delaying onset of a menstrual cycle in a female in need thereof by administering to the female the bridged regimen, or the bridged extended cycle regimen, disclosed herein. The female can be, for example, a female of childbearing age or a peri-menopausal female. 100831 The invention is directed to a method for minimizing uterine bleeding in a female in need thereof by administering to the female the bridged regimen, or the bridged extended cycle regimen, disclosed herein. The female can be, for example, of childbearing age or peri-menopausal. By diminishing endometrial proliferation, administration of estrogen and progestin in the bridged regimen can reduce the volume and duration of menstrual flow. A female on the disclosed bridged extended regimen experiences fewer total scheduled days of bleeding than a female on a traditional 28-day regimen, and -20 experiences less blood loss, because the bridged extended cycle regimen involves fewer stop/start transitions per year. The female to be treated can exhibit abnormal uterine bleeding, including, for example, menorrhagia. As used herein, "abnormal uterine bleeding" refers to an abnormal duration of bleeding (i.e., greater than about 7 days of bleeding, or hypermenorrhea), abnormal amount of bleeding (i.e., greater than about 80 mL blood loss during menses, or menorrhagia), increased frequency of bleeding (i.e., less than about 22 days between menstrual cycles, or polymenorrhea), or any combinations thereof. 100841 The invention is also directed to a method of providing contraception and minimizing uterine bleeding in a female in need thereof by administering to the female the bridged regimen, or the bridged extended cycle regimen, disclosed herein. The female can be, for example, a female of childbearing age or a peri-menopausal female. [0085] The invention, moreover, is directed to a method of treating a menstrual bleeding disorder in a female in need thereof by administering to the female the bridged regimen, or the bridged extended cycle regimen, disclosed herein. The female can be, for example, of childbearing age or peri menopausal. [00861 The invention is also directed to a method of providing contraception and treating a menstrual bleeding disorder in a female in need thereof by administering to the female the bridged regimen, or the bridged extended cycle regimen, disclosed herein. The female can be, for example, a female of childbearing age or a peri-menopausal female. [0087] The invention is directed to a method of treating symptoms associated with ovarian cysts, uterine leiomyomas (fibroids), or Polycystic Ovarian Syndrome in a female in need thereof by administering to the female the bridged regimen, or the bridged extended cycle regimen, disclosed herein. The female can be, for example, of childbearing age, peri-menopausal, or menopausal. The invention is also directed to a method of providing contraception and treating symptoms associated with ovarian cysts, uterine leiomyomas (fibroids), or Polycystic Ovarian Syndrome in a female in need -21 thereof by administering to the female the bridged regimen, or the bridged extended cycle regimen, disclosed herein. The female can be, for example, a female of childbearing age or peri-menopausal. 10088] Ovarian cysts, uterine leiomyomas (fibroids), or Polycystic Ovarian Syndrome can cause symptoms including, but not limited to, pelvic pain, dysmenorrhea., abnormal uterine bleeding, acne, and hirsutism. In the invention, such symptoms can be treated by administration of the bridged regimen, or the bridged extended cycle regimen, described herein. [00891 Ovarian cysts arise from functional cysts that commonly occur around mid-cycle, when a follicle destined to become an egg fails to mature. Instead of leaving the ovary in a process known as ovulation, it remains inside, floating in a tiny sac of fluid. It is that sac that eventually forms into a cyst. Although rarely malignant, ovarian cysts lead to 200,000 hospitalizations in the United States each year. For some women, some studies have shown that the cysts develop cycle after cycle. Though ovarian cysts can sometimes be asymptomatic, they can also cause pain (constant pelvic pain, pain during intercourse, pain during pelvic movement, and/or pain before or after menses), abnormal bleeding (lengthened, shortened, irregular and/or absent menses), and/or abdominal bloating or distension. [00901 Uterine fibroids are benign growths of uterine muscle that sometimes exist singly, but most often are multiple and range in size from microscopic to filling most of the lower abdominal cavity. Many women with fibroids have no symptoms at all. For those that do, the most common complaints are pressure symptoms and heavy, prolonged periods. There may be pressure in the pelvic region from the enlarged uterus, and the resulting symptoms are often related to where the fibroid is exerting pressure (e.g., increased urinary frequency, constipation or difficulty with bowel movements). The pressure can also cause backache, lower abdominal discomfort, and pain during and after intercourse. Fibroids can cause very heavy and prolonged periods, leading to iron-deficiency anemia, as well as painful periods (secondary dysmenorrhea). The presence of fibroids can also cause reproductive -22 problems such as infertility, multiple miscarriages, premature labor, or labor complications. [0091] The term "ovarian cyst" as used above represents more singular occurrences caused by the failure of an egg to mature. Polycystic Ovarian Syndrome (PCOS), in contrast, is due to an abnormal production of LH (luteinizing hormone) and FSH (follicle stimulating hormone) by the pituitary gland. An imbalance of these hormones stops egg production and increases production of androgens, with the ovaries producing higher levels of testosterone and estrogens. This results in ovaries "peppered" with empty egg follicles that become inflamed cysts, irregular or stopped periods (which in turn causes infertility), excess body hair growth, and acne on the face and body. PCOS often leads to obesity, diabetes and hypertension. [0092] Polycystic Ovarian Syndrome is the cause of most cases of androgen dependent hirsutism. See Rittmaster, R.S., Lancet 349:191-195 (1997). Hirsutism can be described as the growth of excessive hair in women on parts of the body where excessive hair is generally not present, e.g., on the back and chest. Most cases of hirsutism are androgen-dependent, i.e., result from a combination of increased androgen production by the body and increased skin sensitivity to androgens. Normally, small quantities of androgens are produced by the ovaries and the adrenal glands. However, in women suffering from Polycystic Ovarian Syndrome, androgen levels are elevated, which can lead to the development of androgen-dependent conditions such as, for example, pronounced forms of acne (e.g., acne papulopustulosa), androgenetic alopecia and mild forms of hirsutism. Oral contraceptives can suppress the ovarian production of androgens and are thus useful in the treatment of these androgen-dependent conditions. [0093] Thus, the invention is also directed to a method of treating hirsutism in a female in need thereof, by administering to the female the bridged regimen, or the bridged extended cycle regimen, disclosed herein. The female can be, for example, of childbearing age, peri-menopausal, or menopausal. [00941 The invention is also directed to a method of providing contraception and treating hirsutism in a female in need thereof, by administering to the - 23 female the bridged regimen, or the bridged extended cycle regimen, disclosed herein. The female can be, for example, a female of childbearing age or peri menopausal. [0095] The invention is directed to a method of treating alopecia in a female in need thereof, by administering to the female the bridged regimen, or the bridged extended cycle regimen, disclosed herein. The female can be, for example, of childbearing age, peri-menopausal, or menopausal. The invention is also directed to a method of providing contraception and treating alopecia in a female in need thereof, by administering to the female the bridged regimen, or the bridged extended cycle regimen, disclosed herein. The female can be, for example, a female of childbearing age or peri-menopausal. [00961 The invention is further directed to a method of decreasing risk of iron deficiency anemia in a female in need thereof by administering to the female the bridged regimen, or the bridged extended cycle regimen, disclosed herein. The female can be, for example, of childbearing age or peri-menopausal. The reduction in the volume and duration of menstrual flow that results from administration of, e.g., the bridged extended cycle regimen can lead to a reduction in the total loss of blood, thus improving the body's iron stores and reducing the morbidity associated with menorrhagia. This effect is particularly desirable in women with coagulation disorders, for example, von Willebrand's disease. The female to be treated can be, but is not limited to, a peri menopausal female. [00971 The invention is also directed to a method of providing contraception and decreasing risk of iron deficiency anemia in a female in need thereof by administering to the female the bridged regimen, or the bridged extended cycle regimen, disclosed herein. The female can be, for example, a female of childbearing age or a peri-menopausal female. [01001 The invention is directed to a method of treating a menstrual disorder in a female in need thereof by administering to the female the bridged regimen, or the bridged extended cycle regimen, disclosed herein. The female can be, for example, of childbearing age or peri-menopausal. Menstrual disorders include, but are not limited to, irregular menstrual cycles, -24 dysmenorrhea (painful menstruation), mittelschmerz, and dysfunctional uterine bleeding, as well as premenstrual symptoms such as, but not limited to, those associated with premenstrual syndrome (PMS) or Premenstrual Dysphoric Disorder (PMDD). [0101] The invention is also directed to a method of providing contraception and treating a menstrual disorder in a female in need thereof by administering to the female the bridged regimen, or the bridged extended cycle regimen, disclosed herein. The female can be, for example, a female of childbearing age or a pen-menopausal female. [0102] During the luteal phase of the menstrual cycle, as many as 75% of women with regular menstrual cycles experience some symptoms of premenstrual syndrome (PMS), a recurring, cyclical disorder involving behavioral, emotional, social and physical symptoms (Steiner et al., Annu. Rev. Med. 48:447-455 (1997)). Behavioral, emotional and social symptoms include, but are not limited to, irritability, mood swings, depression, hostility and social withdrawal. Physical symptoms include, but are not limited to, bloating, breast tenderness, myalgia, migraines or headaches, and fatigue. True PMS only occurs during the luteal phase of the menstrual cycle, with a symptom-free period during the follicular phase. The etiology of PMS is still unknown. [0103] A subgroup of women with PMS, about 2-9%, exhibit symptoms that are primarily related to a severe mood disorder. In these women, the diagnosis of Premenstrual Dysphoric Disorder (PMDD), which is defined in the Fourth edition of the Diagnostic and Statistical Manual of Mental Disorders (DSM IV) can be applied. According to the DSM-IV, a woman with PMDD must have at least five premenstrual symptoms during the luteal phase, with at least one of the symptoms being an emotional or "core" symptom. The core symptoms must be irritability, anger, mood swings, tension or depression (and interfere with daily activities), and must be confirmed by a prospective daily rating for at least two cycles. Three to five percent of women with PMS report to have PMDD. There is also a subgroup of women who experience severe PMS, which accounts for about 20% of the PMS population. These women - 25 experience severe emotional symptoms that do not fall under the strict criteria of PMDD as defined in DSM-IV but require medical attention. U.S. Appl. No. 10/309,313 relates to the use of estrogen/progestin contraceptive regimens optionally combined with an antidepressant for the treatment of PMS, PMDD, and related conditions. 101041 Suppression of ovulation that results from administration of the extended cycle regimen can also eliminate mid-cycle pain ("nittelschmerz") associated with rupture of the ovarian follicle. Additionally, suppression of ovulation and delivery of estrogen and progesterone in a regular, predictable schedule, which results from use of the bridged regimen can be beneficial in the treatment of other menstrual disorders such as heavy or intermenstrual bleeding. In some aspects of the invention, the female is, but not limited to, a peri-menopausal female. [01051 The invention is directed to a method of treating acne in a female in need thereof by administering to the female the bridged regimen, or the bridged extended cycle regimen, disclosed herein. The female can be, for example, of childbearing age, peri-menopausal, or menopausal. The bridged regimen is believed to suppress gonadotropin and decrease ovarian and adrenal androgen production, resulting in an improvement in acne of, e.g., women of childbearing age and older. [01061 The invention is also directed to a method of providing contraception and treating acne in a female in need thereof by administering to the female the bridged regimen, or the bridged extended cycle regimen, disclosed herein. The female can be, for example, a female of childbearing age or peri menopausal. [0107] The invention is directed to a method of treating endometriosis in a female in need thereof by administering to the female the bridged regimen, or the bridged extended cycle regimen, disclosed herein. The female can be, for example, of childbearing age or peri-menopausal. The invention is also directed to a method of providing contraception and treating endometriosis in a female in need thereof by administering to the female the bridged regimen, - 26 or the bridged extended cycle regimen, disclosed herein. The female can be, for example, a female of childbearing age or a peri-menopausal female. [01081 In hormonal therapy of endometriosis, endometriotc tissue responds to adverse endocrine environments (low estrogen and/or high progestin concentration). Progestins produce marked atrophy of the endometrium and ectopic endometrial tissue and decrease intraperitoneal inflammation associated with endometriosis. The American College of Obstetrics and Gynecology stated that progestins, alone or in combination with estrogens as oral contraceptives, are an optimal choice for the management of endometriosis in women who desire contraception (American College of Obstetricians and Gynecologists, ACOG Practice Bulletin No. 11 (December 1999)). The use of the bridged regimen of the present invention is beneficial for treating or preventing endometriosis. [01091 Chronic pelvic pain often precedes and is associated with the development of endometriosis. Thus, the invention is also directed to a method of treating chronic pelvic pain in a female in need thereof by administering to the female the bridged regimen, or the bridged extended cycle regimen, disclosed herein. The female can be., for example, of childbearing age or peri-menopausal. The invention is also directed to a method of providing contraception and treating chronic pelvic pain in a female in need thereof by administering to the female the bridged regimen, or the bridged extended cycle regimen, disclosed herein. The female can be, for example, a female of childbearing age or a peri-menopausal female. 101101 The invention is further directed to a method of reducing the risk of endometrial cancer in a female in need thereof by administering to the female the bridged regimen, or the bridged extended cycle regimen, disclosed herein. The female can be, for example, of childbearing age, peri-menopausal, or menopausal. The invention is also directed to a method of providing contraception and reducing the risk of endometrial cancer in a female in need thereof by administering to the female the bridged regimen, or the bridged extended cycle regimen, disclosed herein. The female can be, for example, a female of childbearing age or peri-menopausal.

- 27 10111] The invention is directed to a method of reducing the risk of ovarian cancer in a female in need thereof by administering to the female the bridged regimen, or the bridged extended cycle regimen, disclosed herein. The female can be, for example, of childbearing age, peri-menopausal, or menopausal. The frequency of ovulation and thereby the frequency of ovarian stimulation can be reduced, suppressed, or eliminated by use of the bridged regimen, in particular, the bridged extended cycle regimen. The female can be, for example, of childbearing age, peri-menopausal, or menopausal. The invention is also directed to a method of providing contraception and reducing the risk of ovarian cancer in a female in need thereof by administering to the female the bridged regimen, or the bridged extended cycle regimen, disclosed herein. The female can be, for example, a female of childbearing age, peri menopausal, or menopausal. [0112] The invention is further directed to a method of treating benign breast disease, including, but not limited to, fibrocystic breast disease, in a female in need thereof by administering to the female the bridged regimen, or the bridged extended cycle regimen, disclosed herein. The female can be, for example, of childbearing age, pen-menopausal, or menopausal. Roughly a third of all women between the ages of 30 and 50 will be diagnosed with fibrocystic breast disease or other benign breast condition. Other terms for this condition include chronic mastitis (inflammation) and manunary dysplasia. 101131 The invention is also directed to a method of providing contraception and treating benign breast disease in a female in need thereof by administering to the female the bridged regimen, or the bridged extended cycle regimen, disclosed herein. The female can be, for example, a female of childbearing age or peri-menopausal. [01141 The invention is also directed to a method of reducing the risk of colorectal cancer in a female in need thereof by administering to the female the bridged regimen, or the bridged extended cycle regimen, disclosed herein. The female can be, for example, of childbearing age, peri-menopausal, or menopausal. The bridged regimen of the present invention is thought to - 28 protect against colorectal cancer as a result of changes in bile synthesis and secretion due to the female hormones in the regimen, which is thought to lead to a reduced concentration of bile acids in the colon. It has also been observed that estrogen inhibits the growth of colon cancer cells in vitro, and estrogen receptors have been identified in normal and neoplastic colon epithelial cells. See Fernandez, E., el al., British J. Cancer 84:722-727 (2001). Thus, the bridged regimen is beneficial in the prevention or reduction in the occurrence of colorectal cancer. [01151 The invention is also directed to a method of providing contraception and reducing the risk of colorectal cancer in a female in need thereof by administering to the female the bridged regimen, or the bridged extended cycle regimen, disclosed herein. The female can be, for example, a female of childbearing age or peri-menopausal. [0116] The invention is directed to a method of preventing or treating an infection in a female in need thereof by administering to the female the bridged regimen, or the bridged extended cycle regimen, disclosed herein. The female can be, for example, of childbearing age, pen-menopausal, or menopausal. For example, sexually transmitted diseases (STDs) are infections caused by a pathogen such as a virus, bacterium, parasite, or fungus, that is spread from person to person through sexual contact. STDs can be painful, irritating, and even life-threatening. The bridged regimen is believed to have a protective role against the development of some STDs because it stimulates the body to produce a thicker cervical mucous, which acts as a barrier to semen carrying bacteria that cause sexually transmitted diseases. [01171 The invention is also directed to a method of providing contraception and treating an infection in a female in need thereof by administering to the female the bridged regimen, or the bridged extended cycle regimen, disclosed herein. The female can be, but is not limited to, a female of childbearing age or peri-menopausal. [01181 Pelvic Inflammatory Disease (PID) is a complication that can result from STD infections. PID is a serious syndrome of the female reproductive tract that results from the spread of infections (most often sexually transmitted -29 infections such as Chlamydia trachoinatis and Nisseris gonnorrheoea) from the vagina and endocervix to the uterus, fallopian tubes and ovaries. PID is commonly manifested as endometritis. (infection of the lining of the uterus) or salpingitis (infection of the fallopian tubes), and less commonly as pelvic peritonitis and/or inflammation of contiguous structures. (MacDonald, N.E., and Bowie, W.R., Canadian Communicable Disease Report 21S4: 25-33 (1995); Westrom, L. and Mardh, P-A., Sexually Transmitted Diseases, 2 nd Ed., pages 593-613, New York: McGraw-Hill, 1990). 101191 PID is a major cause of infertility and ectopic pregnancy. Ectopic pregnancy results from the implantation of a fertilized ovum in the fallopian tube or in the abdominal cavity and is thought to be caused by ciliary dysfunction within the fallopian tube resulting from prior tubal infection with N. gonorrhoea and/or C. trachomatis, which often results in loss of ciliated epithelial cells from the fallopian tubes. It has been estimated that prior tubal infection with STD agents causes about 50% of the cases of ectopic pregnancy. (MacDonald, N.E., and Brunham, R., Canadian Journal of Human Sexuality 6(2):161-170 (1997).) [01201 The bridged regimen is believed to have a protective role against the development of PID because it stimulates the body to produce thicker cervical mucous, which helps prevent semen carrying STD-causing bacteria from gaining access to the uterus and eventually causing PID and PID-related complications, such as ectopic pregnancy. [01211 Thus, the bridged regimen of the present invention is useful in the prevention or reduction in occurrence of sexually transmitted diseases, Pelvic Inflammatory Disease, and ectopic pregnancy. Accordingly, the invention is directed to a method of preventing or reducing the occurrence of a sexually transmitted disease or Pelvic Inflammatory Disease in a female in need thereof by administering to the female the bridged regimen, or the bridged extended cycle regimen, disclosed herein. The invention is also directed to a method of preventing ectopic pregnancy in a female in need thereof by administering to the female the bridged regimen, or the bridged extended cycle regimen, -30 disclosed herein. The female can be, but is not limited to, a female of childbearing age or a pen-menopausal female. [0122] The invention is also directed to a method of providing contraception and treating a sexually transmitted disease or Pelvic Inflammatory Disease in a female in need thereof by administering to the female the bridged regimen, or the bridged extended cycle regimen, disclosed herein. The invention, moreover, is directed to a method of providing contraception and preventing ectopic pregnancy in a female in need thereof by administering to the female the bridged regimen, or the bridged extended cycle regimen, disclosed herein. The female can be, but is not limited to, a female of childbearing age or a peri menopausal female. [0123] In addition, use of the bridged extended cycle regimen, in comparison to the use of a conventional 28-day contraceptive regimen, can lead to a reduction in the reported occurrences of infection such as urinary tract infections, pharyngitis, upper respiratory tract infections, and sinusitus. Thus, the invention is further directed to the prevention or reduction in occurrence of certain infections, such as urinary tract infections, pharyngitis, upper respiratory tract infections, and sinusitus, in a female in need thereof by administering to the female the bridged regimen, or the bridged extended cycle regimen, disclosed herein. The female can be, for example, of childbearing age, peri-menopausal, or menopausal. The invention is also directed to a method of providing contraception and treating certain infections, such as urinary tract infections, pharyngitis, upper respiratory tract infections, and sinusitus, in a female in need thereof by administering to the female the bridged regimen, or the bridged extended cycle regimen, disclosed herein. The female can be, for example, of childbearing age or peri-menopausal. [01241 The invention is also directed to a method of treating temporomandibular disorder in a female in need thereof by administering to the female the bridged regimen, or the bridged extended cycle regimen, disclosed herein. The female can be, for example, of childbearing age, peri menopausal, or menopausal. Temporomandibular disorders (TMD) are disorders of the jaw muscles, temporomandibular joints, and/or the nerves -31 associated with chronic facial pain. The bridged regimen and the bridged extended cycle regimen of the present invention are useful in the treatment of TMD. The invention is also directed to a method of providing contraception and treating temporomandibular disorder in a female in need thereof by administering to the female the bridged regimen, or the bridged extended cycle regimen, disclosed herein. The female can be, for example, of childbearing age or peri-menopausal. 101251 The invention is directed to a method of treating a catamenial symptom in a female in need thereof by administering to the female the bridged regimen, or the bridged extended cycle regimen, disclosed herein. The female can be, for example, of childbearing age or peri-menopausal. Catamenial symptoms are those associated with conditions, disorders, or diseases that can worsen around the time of menses. Such conditions, disorders, or diseases include, but are not limited to, asthma, rheumatoid arthritis, migraine headaches, seizure disorders or epilepsy, multiple sclerosis, and diabetes. The invention is also directed to a method of providing contraception and treating a catamenial symptom in a female in need thereof by administering to the female the bridged regimen, or the bridged extended cycle regimen, disclosed herein. The female can be, for example, of childbearing age or peni menopausal. [0126] Arthritis is a prevalent chronic condition in women. Hormonal factors can influence the frequency and severity of arthritis. In some women, arthritis symptoms such as joint stiffness, swelling and pain peak during the postovulatory phase of the menstrual cycle, and cyclic changes in local antibody release, white blood cell subpopulations and altered pain perception have been proposed as possible mechanisms (Case, A.M. and Reid, R.L., Arch. Intern. Med. 158:1405-1412 (1998)). Estrogen administered as a single agent, and as part of a combined oral contraceptive has been reported to benefit some women (Kay, C.R. and Wingrave, S.J., Lancet 1:1437 (1983); Linos, A., et al., Lancet 1:1871 (1978)). Thus, use of the bridged regimen, or the bridged extended cycle regimen, is beneficial as a method of treating a - 32 catamenial symptom, such as, e.g., a symptom associated with rheumatoid arthritis, in a female in need thereof [01271 Approximately 60% of women with migraines report a relationship to menstruation (Case, A.M. and Reid, R.L., Arch. Intern. Med. 158:1405-1412 (1998)). Decreasing levels of estrogen during the late luteal phase of the menstrual cycle or abrupt withdrawal of estrogen as during the non administration period in women taking oral contraceptives are thought to trigger migraine attacks (Sulak P.J., et al., Obstet. Gynecol 95:261-266 (2000); Kudrow, L., Headache 15:36-49 (1975); Whitty, C.W.M., et al., Lancet 1:856 859 (1966)). Thus, use of the bridged regimen, or the bridged extended cycle regimen, is beneficial as a method of treating a catamenial symptom in a female in need thereof, such as, e.g., a migraine headache in a female. 10128] Catamenial epilepsy refers to seizure disorders that occur or worsen around menstruation. It is believed to result from cyclic alterations in both ovarian hormone levels and drug metabolism (Case, A.M. and Reid, R.L., Arch. Intern. Med. 158:1405-1412 (1998)). Thus, use of the bridged regimen, or the bridged extended cycle regimen, is beneficial as a method of treating a catamenial symptom such as, e.g., a symptom associated with epilepsy, in a female in need thereof. [01291 The invention is directed to a method of treating headache or nausea unrelated to the menstrual cycle in a female in need thereof by administering to the female the bridged regimen, or the bridged extended cycle regimen, disclosed herein. The female can be, for example, of childbearing age, peri menopausal, or menopausal. Use of the bridged extended cycle regimen, in comparison to the use of a conventional 28-day contraceptive regimen, can lead to a reduction in the reported occurrences of non-menstrual-related headache and nausea. Thus, the disclosed bridged regimen, or the bridged extended cycle regimen, can be used as a method of preventing or treating non-menstrual-related headache and nausea. The invention is also directed to a method of providing contraception and treating headache or nausea unrelated to the menstrual cycle in a female in need thereof by administering to the female the bridged regimen, or the bridged extended cycle regimen, disclosed -33 herein. The female can be, for example, of childbearing age or peri menopausal. 101301 The invention is directed further to a method of treating depression unrelated to the menstrual cycle in a female in need thereof by administering to the female the bridged regimen, or the bridged extended cycle regimen, disclosed herein. The female can be, for example, of childbearing age, peri menopausal, or menopausal. "Depression" is a term that is often used to refer to different forms of depressive disorders and includes major depression, bipolar disorder (sometimes called manic-depressive illness), and dysthymia, a less severe form of depression. Major depression is manifested by a combination of symptoms that interfere with the ability to work, study, sleep, eat and enjoy once pleasurable activities. Bipolar disorder, which is not nearly as prevalent as other forms of depressive disorders, is characterized by cycling mood changes. Dysthymia, a less severe type of depression, involves long term, chronic symptoms that do not disable, but keep one from functioning well or from feeling well. "Depression" also includes the less severe, temporary sadness and loneliness often felt from time to time. Use of the bridged extended cycle regimen, compared to use of a conventional 28-day contraceptive regimen, can lead to a reduction in the reported occurrences of non-menstrual-related depression. Thus, the disclosed bridged regimen, or the bridged extended cycle regimen, can be used as a method of preventing or treating non-menstrual-related depression. [01311 The invention is also directed to a method of providing contraception and treating depression unrelated to the menstrual cycle in a female in need thereof by administering to the female the bridged regimen, or the bridged extended cycle regimen, disclosed herein. The female can be, for example, of childbearing age or peri-menopausal. [0132] The invention is further directed to a method of increasing contraceptive effectiveness in a female in need thereof by administering to the female the bridged regimen, or the bridged extended cycle regimen, disclosed herein. The female can be, but is not limited to, a female of childbearing age or a peri-menopausal female. A female in need of contraceptive effectiveness -34 can be, but is not limited to, a higher weight female. A "higher weight female" refers to a human female weighing about 70 kg or more or having a body mass index (BMI) of greater than about 25. In a recent study of body weight and oral contraceptive failure, women weighing about 70.5 kg or more were reported to have a 60% higher risk of oral contraceptive failure (Holt, V.L., et al., Obstet. Gynecol. 99:820-827 (2002)). In a study utilizing the extended cycle regimen, women who weighed about 70 kg or more experienced the same contraceptive effectiveness as. women on the same extended cycle regimen who weighed less than about 70 kg. [0133] Thus, the invention is directed to a method of increasing contraceptive effectiveness in a higher-weight female in need thereof, by administering to the female the bridged regimen, or the bridged extended cycle regimen, disclosed herein. The invention is directed to a method of increasing the contraceptive effectiveness in a human female weighing about 70 kg or more, weighing about 80 kg or more, or weighing about 90 kg or more, by administering to the female the bridged regimen or the bridged extended cycle regimen. [01341 The disclosed bridged regimen, or the bridged extended cycle regimen, can also be used as a method of increasing the contraceptive effectiveness in a human female with a body mass index of greater than about 25, greater than about 30, or greater than about 35. Thus, the invention is also directed to a method of increasing the contraceptive effectiveness in a human female with a body mass index of greater than about 25, greater than about 30, or greater than about 35, by administering to the female the bridged regimen or the bridged extended cycle regimen. 10135] The invention is also directed to a method of increasing fertility in a female in need thereof, by administering to the female the bridged regimen, or the bridged extended cycle regimen, disclosed herein, followed by discontinuation of the regimen and optional administration of an agent to induce ovulation in the female. The female can be, but is not limited to, a female of childbearing age or a peri-menopausal female.

-35 101361 It has been observed clinically that women who are taking oral contraceptives for anovulation often conceive when pills are missed, or shortly after discontinuing oral contraceptive treatment, most likely due to a "rebound effect" occurring in the ovary at least for a short period of time. Suppression of ovarian activity using oral contraceptive pills for 2-6 months may result in decreases in early follicular ovarian androgen production and LH and estradiol levels. Increased androgen levels have been shown to have adverse effects on folliculogenesis. These endocrine changes in the early follicular phase may be responsible for improved ovarian response to clomiphene or other treatments for anovulatory infertility. See Brannigan, E.F., and Estes, M.A., Am. J. Obstet. Gynecol. 188:1424-1430 (2003). [0137] Examples of agents that induce ovulation, and that can be administered following discontinuation of the bridged regimen or the bridged extended cycle regimen of the present invention, include, but are not limited to, menotropins (Follicle Stimulating Hormone (FSH) and Luteinizing Hormone (LH), e.g., Pergonal@) and chlomiphene citrate (Clomid@). The ovulation inducing agent can be administered during a suitable time as can be determined by one of skill in the art, e.g., a physician. In some aspects of the invention, the ovulation-inducing agent can be administered, e.g., within about one week to about one month, or within about one week to about two weeks, after discontinuation of the bridged regimen of the present invention. In some aspects of the invention, the ovulation-inducing agent is administered, e.g., about 2 to about 10 days, or about 5 to about 9 days after discontinuation of the bridged regimen or bridged extended cycle regimen. [0138] Thus, the invention is directed to a method of increasing fertility in a female in need thereof, the method comprising (i) administration to the female of the bridged regimen, or the bridged extended cycle regimen, disclosed herein; (ii) discontinuation of administration of the bridged regimen, or the bridged extended cycle regimen; and (iii) optional administration to the female of an ovulation-inducing agent during the discontinuation of administration of the bridged regimen, or the bridged extended cycle regimen; wherein fertility in the female is increased.

-36 [01391 In some aspects of the invention, the disclosed methods are particularly useful in peri-menopausal women and/or menopausal women. Peri menopausal and menopausal women frequently experience a large variety of conditions and disorders that have been attributed to estrogen deprivation due to ovarian failure or hypoestrogenism. The duration of these disorders can be extremely variable and include hot flushes which can be devastating in some women and very mild in others. Dryness of the vagina associated with susceptibility to minor infections, and frequently associated with discomfort during intercourse, is another symptom that can be directly related to the decrease in estrogen availability. [01401 In a long-term sense, one of the most health-threatening aspects of menopause is the loss of mineral from bone which can result in a decrease in bone mass (osteoporosis) and generates a serious risk of fractures. For example, evidence exists that there is a six-fold increase in fractures in post menopausal women as opposed to men of the same age (Garraway el al., Mayo Clinic Proceedings 54:701-707 (1979)). These fractures, of course, carry a high complication rate among older people, a marked increase in disability and general morbidity, and certainly an increased risk of mortality. [0141] Another serious health-threatening aspect of menopause is the impressive loss of protection against heart attacks, which is enjoyed by younger women up to the age of 60, when compared to men of the same age. The steep increase in mean serum cholesterol concentration, which occurs around menopause (during the fourth and fifth decades), can contribute importantly to the progressive increase in death from ischemic heart disease in older women. In the eighth and ninth decades, the incidence of deaths from ischemic heart disease, approaches that of men (Havlik, R.J. and Manning Feinleid, P.H., NIH Publication No. 79-1610, U.S. Department of HEW (1979)). [0142] Accordingly, the invention is directed to a method for treating conditions, such as the physical conditions described above, resulting from menopausal estrogen decline in a menopausal female by administering the bridged regimen, or the bridged extended cycle regimen, disclosed herein to -37 the female. The invention is also directed to a method for treating conditions, such as the physical conditions described above, resulting from hypoestrogenism in a female by administering the bridged regimen, or the bridged extended cycle regimen, disclosed herein to the female. The invention is further directed to a method for treating conditions, such as the physical conditions described above, resulting from ovarian failure in a female by administering the bridged regimen, or the bridged extended cycle regimen, disclosed herein to the female. [01431 The invention is also directed to a method of providing contraception and treating conditions, such as the physical conditions described above, resulting from hypoestrogenism in a peri-menopausal female in need thereof by administering the bridged regimen, or the bridged extended cycle regimen, disclosed herein to the pen-menopausal female. The invention is further directed to a method of providing contraception and treating conditions, such as the physical conditions described above, resulting from ovarian failure in a peri-menopausal female in need thereof by administering the bridged regimen, or the bridged extended cycle regimen, disclosed herein to the peri menopausal female. [0144] In addition to the above-mentioned major physical problems, some menopausal and peri-menopausal women experience a large variety of other symptoms ranging from depression, insomnia, and nervousness, to symptoms of arthritis and so forth. 101451 It is generally agreed that estrogen is the most effective agent for the control or prevention of menopausal flushes and vaginal atrophy. It is effective in retarding or preventing the appearance of clinical evidence of osteoporosis. In appropriate doses, when combined with progestin, a favorable effect upon blood lipids can also be seen. Problems with estrogen therapy do exist, however, and have been widely explored and documented in the medical literature. The means by which estrogen has been administered, generally speaking, involves either the use of estrogen alone or estrogen plus a progestin.

-38 10146] Estrogen alone, given in small doses on a continuous basis, is effective in most patients for the control of the above symptoms and problems associated therewith. However, although the vast majority of women taking continuous low-dose estrogen will not have bleeding for many months or even years, there is a distinct risk posed by this routine of silently (i.e., exhibiting no overt symptoms) developing "hyperplasia of the endometrium." This term refers, of course, to an overstimulation of the lining of the uterus which can become pre-malignant, coupled with the possibility that the patient will eventually develop cancer of the uterine lining even under such a low-dose regimen (Gusberg et al., Obstetrics and Gynaecology 17:397-412 (1961)). [01471 Estrogen alone can also be given in cycles, usually 21-25 days on treatment and 5-7 days off treatment. Again, if small doses of estrogen are required to control the symptoms and it is used to this fashion, only about 10% of women will experience withdrawal bleeding between the cycles of actual treatment. However, one must again be concerned by the risk of developing endometrial hyperplasia and by the increased relative risk of developing cancer of the uterus (Research on the Menopause: Report of a W.H.O. Scientific Group, 53-68 (1981)). [01481 The addition of progestin with estrogen, however, as in the bridged regimen disclosed herein, will virtually eliminate the concern about developing endometrial hyperplasia and reduce the risk of developing endometrial carcinoma below that of the untreated general population. [01491 Thus, the invention is directed to a method of treating a menopausal disorder or a peri-menopausal disorder or symptom in a female in need thereof by administering to the female the bridged regimen, or the bridged extended cycle regimen, disclosed herein. The invention is also directed to a method of providing contraception and treating a peri-menopausal disorder or symptom in a peri-menopausal female in need thereof by administering to the female the bridged regimen, or the bridged extended cycle regimen, disclosed herein. 101501 The bridged regimen or the bridged extended cycle regimen can be used as a method of maintaining bone density or preventing loss of bone density in a female. The bridged regimen or bridged extended cycle regimen -39 can also be used in this way by administering calcium and/or vitamin D, e.g., in combination with the administration of estrogen and progestin. [01511 The bridged regimen is not limited to administration to peri menopausal or menopausal females as a method of maintaining bone density or preventing bone loss. The bridged regimen can also be used in a method of maintaining bone density or preventing bone loss by administration to a female of childbearing age that is not peri-menopausal or menopausal. For example, the bridged regimen can be used with females 12-16 years of age who have not yet achieved peak bone density, but who, due to various conditions such as anorexia, are at risk of loss of bone density or at risk of not achieving a normal physiologic bone density for age and developmental maturity. 10152] Thus, the bridged regimen, or the bridged extended cycle regimen, can also be used as a method of treating a condition resulting from menopausal or pen-menopausal estrogen decline, including osteoporosis. The bridged regimen, or the bridged extended cycle regimen, can also be used as a method of providing contraception and treating a condition in a peri-menopausal female in need thereof resulting from peri-menopausal estrogen decline, including osteoporosis. [01531 The bridged regimen, or the bridged extended cycle regimen, can also be used as a method of treating a female in need of hormone replacement therapy. [01541 In some aspects of the invention, the estrogen and progestin of the bridged regimen can be ethinyl estradiol and levonorgestrel, although other useful estrogens and progestins can be employed. The weight ratio of these two active ingredients can be about 1:0.2 to about 1:300. In some aspects of the invention, the weight ratio of estrogen and progestin is about 1:1 to about 1:50. In other aspects of the invention, the weight ratio of estrogen and progestin is about 1:1 to about 1:10. For example, the daily amount of ethinyl estradiol is about 10 pg to about 30 tg and the daily amount of levonorgestrel is about 0.05 mg to about 0.2 mg.

-40 101551 The values given above are for ethinyl estradiol and levonorgestrel, and if a different estrogen or progestin is employed, an adjustment in the amount based on the relative potency or activity can be made. Correlations in potency among the various estrogens and among the various progestins are known. See, for example, EP 0 253 607, which is hereby incorporated in its entirety by reference. For example, 30 pg of ethinyl estradiol is roughly equivalent to 60 tg of mestranol or 2,000 ptg of 17p-estradiol. Similarly, 0.050 mg of levonorgestrel is equivalent to about 0.175 mg of norethindrone acetate, about 0.050 mg of desogestrel, about 0.050 mg 3-ketodesogestrel, about 0.035 mg of gestodene, or about 0.100 mg of norgestrel. It should be understood that when norgestrel is used in place of levonorgestrel, its concentration is twice that of levonorgestrel. Norgestrel (dl-norgestrel) is a racemic mixture of optically active isomers, while levonorgestrel is one of the optically active isomers present in norgestrel. [01561 Equivalent concentrations of estrogens and of progestins can be determined using either in vitro or in vivo assay methods. See, for example, Kuhl, H., Drugs 51(2):188-215 (1996); Philibert, D., et al., Gynecol. Endocrinol. 13:316-326 (1999); and Lundeen, S., el al., J. Steroid Biochem. Molec. Biol.78:137-143 (2001), in which the relative potencies of various progestins are compared using both in vitro and in vivo test assays. See also, for example, Dickey, R. P., "Contraceptive Therapy," OBG Management Supplement (October 2000), pp. 2-6. Each of these documents is hereby incorporated by reference in its entirety. [0157] For example, various combinations of progestin and estrogen that have been used in oral contraceptives are shown in Table 1.

-41 TABLE I Combinations of Progestin and Estrogen Norethindrone EE Equivalent Dose Equivalent Dose Dose Progestin (mg) Dose (mg) Estrogen (mg) (mg) P/E Ratio Norethynodrel 9.85 9.85 Mestranol 0.150 0.105 93.810 5.00 5.00 0.075 0.053 95.238 2.50 2.50 0.036 0.025 99.206 2.50 2.50 0.100 0.070 35.714 Norethindrone 10.00 10.00 Mestranol 0.060 0.042 238.095 2.00 2.00 0.100 0.070 28.571 1.00 1.00 0.050 0.035 28.571 1.00 1.00 0.080 0.056 17.857 Norethindrone 1.00 1.00 Ethinyl 0.050 0.050 20.000 1.00 1.00 estradiol (EE) 0.035 0.035 28.571 0.50 0.50 0.035 0.035 14.286 0.40 0.40 0.035 0.035 11.429 Norethindrone 2.50 2.50 EE 0.050 0.050 50.000 acetate 1.00 1.00 0.050 0.050 20.000 0.60 0.60 0.030 0.030 20.000 1.50 1.50 0.030 0.030 50.000 1.00 1.00 0.020 0.020 50.000 Ethynodiol 1.00 1.00 Mestranol 0.100 0.070 14.286 diacetate Ethynodiol 1.00 1.00 EE 0.050 0.050 20.000 diacetate 1.00 1.00 0.035 0.035 28.571 dl-Norgestrel 0.50 0.75 EE 0.050 0.050 10.000 0.30 0.45 0.030 0.030 10.000 Levonorgestrel 0.10 0.35 EE 0.020 0.020 5.000 0.15 0.52 0.030 0.030 5.000 Equivalencies 50 mg Mestranol = approx. 35 mg Ethinyl estradiol EE) 0.1 mg d-Norgestrel =approx. 0..15 mg Norethindrone [01581 Each block in Table 1 describes a specific combination of progestin and estrogen, e.g., norethynodrel and mestranol. and within each block older combinations are listed first, with successively newer combinations following. [0159] Suitable progestins for use in the present invention include, but are not limited to, natural and synthetic compounds having progestational activity, such as, for example, progesterone, chlormadinone acetate, norethindrone, cyproterone acetate, norethindrone acetate, desogestrel, levonorgestrel, -42 drospirenone, trimegestone, norgestrel, norgestimate, norelgestromin, etonogestrel, gestodene, and other natural and/or synthetic gestagens. Prodrugs of suitable progestins can also be used in the bridged regimen or bridged extended cycle regimen of the present invention. [01601 The expression "prodrug" denotes a derivative of a known direct acting drug, which derivative has enhanced delivery characteristics and therapeutic value as compared to the drug and is transformed into the active drug by an enzymatic or chemical process. Ethynodiol diacetate, which is converted in vivo to norethindrone, is an example of a progestin prodrug that can be used in the present invention. Additional examples of progestin prodrugs include, but are not limited to, norgestimate (which is converted in vivo to 17-deacetyl norgestimate, also known as norelgestromin), desogestrel (which is converted in vivo to 3-keto desogestrel, also known as etonogestrel), and norethindrone acetate (which is converted in vivo to norethindrone). [01611 Suitable estrogens in the present invention include, but are not limited to, natural and synthetic compounds having estrogenic activity, such as, for example, estradiol (17p-estradiol), 17a-estradiol, estriol, estrone, and their esters, such as the acetate, sulfate, valerate or benzoate esters of these compounds, including, for example, estradiol 17p-cypionate, estradiol 17 propionate, estradiol 3-benzoate, and piperazine estrone sulfate; ethinyl estradiol; conjugated estrogens (natural and synthetic); mestranol; agonistic anti-estrogens; and selective estrogen receptor modulators. Prodrugs of suitable estrogens can also be used in the extended cycle regimen of the present invention. Examples of estrogen prodrugs that can be used in the present invention include, but are not limited to, estradiol acetate (which is converted in vivo to 17-estradiol) and mestranol (which is converted in vivo to ethinyl estradiol). 101621 The antidepressant that is optionally combined with the bridged regimen can be a selective serotonin reuptake inhibitor (SSRI), a tricyclic antidepressant or anxiolytic, or any antidepressant known to one of skill in the art. Suitable antidepressants include, but are not limited to, alprazolam (XANAXO), clomipramine (ANAFRANL*), fluoxetine (PROZACO), paroxetine -43 (PAXILO), sertraline (ZOLoFT4), nefazodone (SERZONE), fenfluramine (PONDIMN*) and venlafaxine (EFFEXOR@). [0163] The daily amount of antidepressant administered can vary, depending on the antidepressant used, from about 0.75 to about 2 mg, from about 10 to about 20 mg, or from about 50 to about 100 mg. For example, in some aspects of the invention, fluoxetine hydrochloride is administered in a daily amount of about 5 mg to about 120 mg. [0164] In some aspects of the invention, the antidepressant is administered during the unopposed estrogen interval of the bridged regimen. In other aspects of the invention, the antidepressant is administered continuously throughout the regimen, intermittently, one time during each menstrual cycle, or once weekly. For example, in some aspects of the invention, fluoxetine hydrochloride is administered in a one-time or once-weekly dose of about 90 mg. [0165] The estrogen and progestin are administered in the conventional manner by any route where they are active. For example, administration can be by, but is not limited to, parenteral, subcutaneous, intravenous, intramuscular, intraperitoneal, transdermal, buccal, or ocular routes, or intravaginally, by inhalation, by depot injections, or by hormone implants. Thus, modes of administration for the estrogen and progestin (either alone or in combination with other pharmaceuticals) can be, but are not limited to, sublingual, injectable (including short-acting, depot, implant and pellet forms injected subcutaneously or intramuscularly), vaginal creams, suppositories, pessaries, rings, rectal suppositories, intrauterine devices, and transdermal forms such as patches and creams. [0166] Most estrogens and progestins are orally active and this route of administration can be used in the invention. Accordingly, administration forms can include, but are not limited to, tablets, dragees, capsules and pills, which contain the estrogen and the progestin and one or more suitable pharmaceutically acceptable carriers. [01671 For oral administration, the estrogen and progestin can be formulated readily by combining these compounds with pharmaceutically acceptable -44 carriers well known in the art. Such carriers enable the compounds of the invention to be formulated as tablets, pills, dragees, capsules, liquids, gels, syrups, slurries, suspensions and the like, for oral ingestion by a patient to be treated. Pharmaceutical preparations for oral use can be obtained by adding a solid excipient, optionally grinding the resulting mixture, and processing the mixture of granules, after adding suitable auxiliaries, if desired, to obtain tablets or dragee cores. Suitable excipients include, but are not limited to, fillers such as sugars, including, but not limited to, lactose, sucrose, mannitol, and sorbitol; cellulose preparations such as, but not limited to, maize starch, wheat starch, rice starch, potato starch, gelatin, gum tragacanth, methyl cellulose, hydroxypropylmethyl-cellulose, sodium carboxymethylcellulose, and polyvinylpyrrolidone (PVP). If desired, disintegrating agents can be added, such as, but not limited to, the cross-linked polyvinyl pyrrolidone, agar, or alginic acid or a salt thereof such as sodium alginate. 10168] Dragee cores can be provided with suitable coatings. For this purpose, concentrated sugar solutions can be used, which can optionally contain gum arabic, talc, polyvinyl pyrrolidone, carbopol gel, polyethylene glycol, and/or titanium dioxide, lacquer solutions, and suitable organic solvents or solvent mixtures. Dyestuffs or pigments can be added to the tablets or dragee coatings for identification or to characterize different combinations of active compound doses. 10169] Pharmaceutical preparations which can be used orally include, but are not limited to, push-fit capsules made of gelatin, as well as soft, sealed capsules made of gelatin and a plasticizer, such as glycerol or sorbitol. The push-fit capsules can contain the active ingredients in admixture with filler such as, e.g., lactose, binders such as, e.g., starches, and/or lubricants such as, e.g., talc or magnesium stearate and, optionally, stabilizers. In soft capsules, the active compounds can be dissolved or suspended in suitable liquids, such as fatty oils, liquid paraffin, or liquid polyethylene glycols. In addition, stabilizers can be added. All formulations for oral administration should be in dosages suitable for such administration.

-45 [0170] For buccal administration, the estrogen and progestin compositions can take the form of tablets or lozenges formulated in conventional manner. [01711 For administration by inhalation, the estrogen and progestin for use according to the present invention are conveniently delivered in the form of an aerosol spray presentation from pressurized packs or a nebulizer, with the use of a suitable propellant, e.g., dichlorodifluoromethane, trichlorofluoromethane, dichlorotetrafluoroethane, carbon dioxide or other suitable gas. In the case of a pressurized aerosol the dosage unit can be determined by providing a valve to deliver a metered amount. Capsules and cartridges of, e.g., gelatin for use in an inhaler or insufflator can be formulated containing a powder mix of the compound and a suitable powder base such as lactose or starch. 10172] The estrogen and progestin can be formulated for parenteral administration by injection, e.g., by bolus injection or continuous infusion. The compounds can be administered by continuous infusion subcutaneously over a period of about 15 minutes to about 24 hours. Formulations for injection can be presented in unit dosage form, e.g., in ampoules or in multi dose containers, with an added preservative. The compositions can take such forms as suspensions, solutions or emulsions in oily or aqueous vehicles, and can contain formulatory agents such as suspending, stabilizing and/or dispersing agents. [01731 The compounds can also be formulated in rectal compositions such as suppositories or retention enemas, e.g., containing conventional suppository bases such as cocoa butter or other glycerides. [0174] In addition to the formulations described previously, the compounds can also be formulated as a depot preparation. Such long acting formulations can be administered by implantation (for example subcutaneously or intramuscularly) or by intramuscular injection. Depot injections can be administered at about 1 to about 6 months or longer intervals. Thus, for example, the compounds can be formulated with suitable polymeric or hydrophobic materials (for example as an emulsion in an acceptable oil) or ion exchange resins, or as sparingly soluble derivatives, for example, as a sparingly soluble salt.

-46 101751 The pharmaceutical compositions of the estrogen and progestin also can comprise suitable solid or gel phase carriers or excipients. Examples of such carriers or excipients include but are not limited to calcium carbonate, calcium phosphate, various sugars, starches, cellulose derivatives, gelatin, and polymers such as, e.g., polyethylene glycols. [01761 In the transdermal administration, the estrogen and progestin components, for example, can be applied to a plaster, or can be applied by transdermal, therapeutic systems that are consequently supplied to the organism. [0177] The combination of estrogen and progestin can also be administered in combination with other active ingredients. For example, as described above, estrogen and progestin can be administered in combination with an antidepressant. Estrogen and progestin can also be administered with vitamin D and/or calcium in the bridged regimen as a method of maintaining or preventing loss of bone density. Alternatively, vitamin D and/or calcium can be administered in the bridged regimen during the unopposed estrogen interval following administration of estrogen and progestin. The form of vitamin D and of calcium used in the present invention would be well known to those of skill in the art, as would the amount. For example, calcium can be administered in the form of calcium carbonate, at a daily dosage level of 500 mg. [01781 Thus, pharmaceutical formulations containing the estrogen and progestin and a suitable carrier can be solid dosage forms which include, but are not limited to, tablets, capsules, cachets, pellets, pills, powders and granules; topical dosage forms which include, but are not limited to, solutions, powders, fluid emulsions, fluid suspensions, semi-solids, ointments, pastes, creams, gels and jellies, and foams; and parenteral dosage forms which include, but are not limited to, solutions, suspensions, emulsions, and dry powder; comprising an effective amount of estrogen and progestin as taught in this invention. It is known in the art that the active ingredients can be contained in such formulations with pharmaceutically acceptable diluents, fillers, disintegrants, binders, lubricants, surfactants, hydrophobic vehicles, -47 water soluble vehicles, emulsifiers, buffers, humectants, moisturizers, solubilizers, preservatives and the like. The means and methods for administration are known in the art and an artisan can refer to various pharmacologic references for guidance. For example, "Modem Pharmaceutics", Banker & Rhodes, Marcel Dekker, Inc. 1979; and "Goodman & Gilman's The Pharmaceutical Basis of Therapeutics," 6 th Edition, MacMillan Publishing Co., New York 1980 can be consulted. [01791 The preparations of the invention can be produced in the form of a kit or package, with the daily dosages arranged for proper sequential administration. For example, in some aspects of the invention, e.g., in the oral form of the formulation, the present invention provides a pharmaceutical package which contains combination-type contraceptives in multiple dosage units in a synchronized, fixed sequence, wherein the sequence or arrangement of the dosage units corresponds to the stages of daily administration. [01801 Thus, for example, the pharmaceutical formulations useful in the invention can be provided in kit form containing at least about 20 tablets intended for ingestion on successive days, followed by about 2 to about 10 tablets, intended for ingestion on successive days. Administration is daily for at least 20 consecutive days using tablets containing the both the estrogen and the progestin, and is followed by administration that is daily for about 2 to about 10 consecutive days using tablets containing estrogen. For example, administration can be for 60-110 consecutive days, using tablets containing both estrogen and the progestin, followed by administration for at least 2-10 days with estrogen, using tablets containing estrogen. As another example, administration can be for 81-110 days, using tablets containing both estrogen and progestin, followed by administration for at least 2-10 days with estrogen, using tablets containing estrogen. As yet another example, administration can be for 21-26 days, using tablets containing both estrogen and progestin, followed by administration for at least 2-10 days with estrogen, using tablets containing estrogen. [01811 In another example, the pharmaceutical formulations may be provided in kit form containing, for a 28-day regimen, 25 tablets, each tablet containing -48 estrogen and progestin, intended for ingestion on successive days, followed by 3 tablets, each tablet containing estrogen, intended for ingestion on successive days. In other aspects of the invention, the pharmaceutical formulations may be provided in kit form containing 25 tablets, each tablet containing both the estrogen and the progestin, intended for ingestion on successive days, and 3 tablets, each tablet containing both estrogen and an antidepressant, e.g., fluoxetine hydrochloride, intended for ingestion on successive days. [01821 All of the various aspects, embodiments and options described herein can be combined in any and all variations. The bridged regimen disclosed herein, including the bridged extended cycle regimen, can be administered to females of child-bearing age, peri-menopausal females, or menopausal females as needed for treatment of any of the conditions and disorders described above. [0183] The following examples are illustrative, but not limiting, of the method and compositions of the present invention. Other suitable modifications and adaptations of the variety of conditions and parameters normally encountered and obvious to those skilled in the art are within the spirit and scope of the invention. Thus, the breadth and scope of the present invention should not be limited by any of the above-described exemplary embodiments, but should be defined only in accordance with the following claims and their equivalents. EXAMPLE 1 [0184] A group of women, each woman having one of the conditions described above, are administered a combined dosage form of estrogen and progestin monophasically for 21 to 26 consecutive days, followed by administration of low-dose estrogen for 2 to 10 days, in which the daily amounts of estrogen and progestin are equivalent to about 5 pig to about 50 pg of ethinyl estradiol and about 0.05 mg to about 1.5 mg of levonorgestrel, respectively. [0185] For example, a group of women, each woman having one of the conditions described above, are administered monophasically a combination of estrogen and progestin for 25 days, followed by administration of estrogen - 49 for 3 days. Each woman is administered 25 oral contraceptive tablets on days I through 25 of the menstrual cycle, one tablet per day, each tablet containing 150 pLg levonorgestrel and 30 pg ethinyl estradiol. On days 26 through 28 of the cycle, each woman is administered 3 tablets, one tablet per day, each tablet containing 30 ptg ethinyl estradiol. The administration schedule is illustrated in Table 1. This 28-day regimen is repeated for each menstrual cycle and administered to the women for a period of about one year. Because there are about 13 menstrual cycles per year, there are about 13 treatments administered per year. Table 1. Administration schedule for a 28-day regimen Days Hormone Antidepressant 1-25 150 pg levonorgestrel and none 30 pg ethinyl estradiol 26-28 30 pg ethinyl estradiol none 101861 The women are monitored for improvement at the conclusion of administration of the regimen. EXAvPLE 2 {0187] A group of women, each woman having one of the conditions discussed above, are administered a combined dosage form of estrogen and progestin, preferably monophasically, for 21 to 26 consecutive days, followed by administration of estrogen for 2 to 10 days, in combination with the antidepressant fluoxetine hydrochloride, in which the daily amounts of estrogen and progestin are equivalent to about Spg to about 50 ig of ethinyl estradiol and about 0.05 ing to about 1.5 mg of levonorgestrel, and the fluoxetine hydrochloride is in an amount of about 5 mg to about 120 mg. Oral contraceptives with initial doses of fluoxetine at either 5 mg or 10 mg/day can be started to avoid any activating side effects that may lead to noncompliance. The dose can then be increased as needed. Fluoxetine can also be given intermittently during the late luteal phase, which is typically 1-2 weeks before -50 menses. In addition, a one-time or once-weekly dose of about 90 mg of fluoxetine can be administered. [01881 For example, a group of women, each woman having one of the conditions described above, are administered monophasically a combination of estrogen and progestin for 25 days, followed by administration of estrogen and an antidepressant for 3 days. Each woman is administered 25 oral contraceptive tablets on days 1 through 25 of the menstrual cycle, one tablet per day, each tablet containing 150 gg levonorgestrel and 30 pg ethinyl estradiol. On days 26 through 28 of the cycle, each woman is administered 3 tablets, one tablet per day, each tablet containing 30 pg ethinyl estradiol and 20 mg fluoxetine hydrochloride and 30 pg . ethinyl estradiol. This administration schedule is illustrated in Table 3. This 28-day regimen is repeated for each menstrual cycle and administered to the women for a period of about one year. Because there are about 13 menstrual cycles per year, there are about 13 treatments administered per year. Table 3. Administration schedule for a 28-day regimen with an antidepressant Days Hormone Antidepressant 1-25 150 pg levonorgestrel and none 30 4g ethinyl estradiol 26-28 30 pg ethinyl estradiol 20 mg fluoxetine hydrochloride daily OR a one-time dose of 90 mg fluoxetine hydrochloride OR a once-weekly dose of 90 mg I fluoxetine hydrochloride [0189] The women are monitored for improvement at the conclusion of administration of the regimen. EXAMPLE 3 [0190] Another aspect of the invention encompasses a bridged extended cycle regimen that allows a woman the option of limiting her menstrual periods to about four times per year. A group of women, each woman having one of the -51 conditions discussed above, are administered a combined dosage form of estrogen and progestin monophasically for about Si to 89 days, followed by administration of estrogen for 2 to 10 days, in which the daily amounts of estrogen and progestin are equivalent to about 5-50 pg of ethinyl estradiol and about 0.025 to 10 mg, preferably about 0.05 to 1.5 mg, of levonorgestrel, respectively. [0191] For example, a group of women, each woman having one of the conditions described above, are administered 84 oral contraceptive tablets on days 1 through 84 of the menstrual cycle, one tablet per day, each tablet containing 150 pg levonorgestrel and 30 pg ethinyl estradiol. On days 85-91 of the cycle, each woman is administered 7 tablets, one tablet per day, each tablet containing 30 pg ethinyl estradiol. This administration schedule is illustrated in Table 4. This 91-day regimen is repeated for a total period of about one year, with four treatments administered per year. Table 4. Administration schedule for a 91-day regimen Days Hormone Antidepressant 1-84 150 pg levonorgestrel and none 30 pg ethinyl estradiol 85-91 30 pg ethinyl estradiol none 101921 The women are monitored for improvement at the conclusion of administration of the regimen. EXAMPLE 4 [01931 A group of women, each woman having one of the conditions discussed above, are administered a combined dosage form of estrogen and progestin monophasically for about 81 to 89 days, followed by administration of low-dose estrogen and fluoxetine hydrochloride for 2 to 10 days, in which the daily amounts of estrogen and progestin are equivalent to about 5-50 pg of ethinyl estradiol and about 0.025 to 10 mg, preferably about 0.05 to 1.5 mg, of levonorgestrel, respectively, and the fluoxetine hydrochloride is in an amount of about 5-120 mg. Oral contraceptives with initial doses of fluoxetine at - 52 either 5 mg or 10 mg/day can be started to avoid any activating side effects that may lead to noncompliance. The dose can then be increased as needed. Fluoxetine can also be given intermittently during the late luteal phase, which is typically 1-2 weeks before menses. In addition, a one-time or once-weekly dose of about 90 mg of fluoxetine can be administered. [01941 For example, a group of women, each woman having one of the conditions described above, are administered 84 oral contraceptive tablets on days I through 84 of the menstrual cycle, one tablet per day, each tablet containing 150 pig levonorgestrel and 30 pg ethinyl estradiol. On days 85-91 of the cycle, each woman is administered 7 tablets, one tablet per day, each tablet containing 30 jig ethinyl estradiol and 20 mg fluoxetine hydrochloride. This administration schedule is illustrated in Table 5. This 91-day regimen is repeated for a total period of about one year, with four treatments administered per year. Table 5. Administration schedule for a 91-day regimen with an antidepressant Days Hormone Antidepressant 1-84 150 ptg levonorgestrel and none 30 pg ethinyl estradiol 85-91 30 ig ethinyl estradiol 20 mg fluoxetine hydrochloride daily OR a one-time dose of 90 mg fluoxetine hydrochloride OR a once-weekly dose of 90 mg fluoxetine hydrochloride [0195] The women are monitored for improvement at the conclusion of administration of the regimen.

-53 EXAMPLE 5 Multicenter Randomized Phase III Clinical Trial to Evaluate Two Continuous Oral Contraceptive Regimens in Women Diagnosed with Premenstrual Syndrome (PMS) and Premenstrual Dysphoric Disorder (PMDD) Clinical Design and Summary [0196] In a multicenter, randomized, clinical trial the efficacy and safety of three combination oral contraceptives regimens in the prevention of pregnancy in sexually active women, ages 18 through 40 years, will be evaluated. Patients will be randomized in a 1:1:1 fashion to one of the following regimens: * Levonorgestrel 150 ig/ethinyl estradiol (EE) 30 pg administered once daily for 84 days as a combination oral tablet followed by ethinyl estradiol 30 pg administered once daily for 7 days (DP3-84/30); e Levonorgestrel 150 jig/ethinyl estradiol 30 jig administered once daily for 84 days as a combination oral tablet followed by ethinyl estradiol 10 pg administered once daily for 7 days (DP3-84/10); or * Levonorgestrel 150 jig/ethinyl estradiol 30 pg administered once daily for 25 days as a combination oral tablet followed by ethinyl estradiol 30 jig administered once daily for 3 days (DP3-25/30). 101971 Patients randomized to either DP3-84/30 or DP3-84/10 will receive 4 cycles of study drug. Patients randomized to DP3-25/30 will receive 13 cycles of study drug. All patients will receive approximately 1 year of therapy. [0198] The study coordinator or designated personnel will register the patient. Patients will be randomly assigned to one of the treatment regimens. The treatment group assignment will not be revealed to the patient prior to signing of the informed consent. [01991 All patients, regardless of randomization, will initiate study OC therapy on the first Sunday following the beginning of their menstrual period ("Sunday starters") and will remain as Sunday starters throughout the study. Each of the dose packs will be dispensed with an abbreviated patient information sheet and a more detailed patient package insert (PPI).

-54 102001 All patients will complete and download information entered into an electronic diary. Assessments will include study drug compliance, use of additional forms of contraception, bleeding patterns, weight, assessment of the incidence and severity of menstrual related symptoms and medication taken to relieve these symptoms. Information will be self-recorded on the electronic diary via a series of pre-programmed questions. [02011 Two hundred (200) patients in each treatment arm are targeted to complete the study. Pregnancy rate will be calculated using data from those patients age 1S to 35. Patients age 36 through 40 will also be enrolled. Patient Eligibility Inclusion Criteria 102021 Patients must meet the following criteria to be included in the study: 1. Sexually active adult females (age 18 through 40), of child bearing potential, in a heterosexual relationship, at risk for pregnancy, who are in good health and who * have a history of OC use for an interval of at least three successive cycles with regular withdrawal bleeding (bleeding during the pill-free interval or during the first three days of the subsequent cycle) prior to enrollment (Continuous Users) OR * have no prior history OC use (Fresh-Starts) OR * have no history of OC use in the 6 months prior to enrollment (Prior Users) 2. Negative urine pregnancy test. 3. Signed informed consent. 4. Agree to use study oral contraceptive therapy as their primary birth control method (BCM).

-55 Exclusion Criteria: 10203] Patients will be excluded from the study if any of the following criteria are met: I. History of hypersensitivity to estrogen or progestin components of OCs. 2. History of alcohol or drug abuse which, in the opinion of the investigator, makes the patient unfit for participation in the study. 3. Active smoker age > 34 years. 4. Chronic use of any medication that may interfere with the efficacy of oral contraceptives. 5. History of being HIV or Hepatitis C positive. 6. History of persistent noncompliance with any chronic medication. 7. History of having received injectable hormone therapy (e.g., Depo-Provera@R (Pharmacia and Upjohn)) within the 10 months prior to enrollment or having a progestin-releasing intrauterine device (IJD) in place within 3 months prior to enrollment or has had a contraceptive implant removed within one month prior to enrollment or has received any other form of hormonal contraception within 3 months prior to enrollment. 8. Routine concomitant use of additional forms of contraception (IUD, diaphragm, contraceptive sponge) with the exception of condoms. 9. Patients who have had recent surgical or medical abortion, miscarriage, or vaginal or cesarean delivery must have had at least two normal menstrual cycles prior to enrollment. 10. History of abnormal bleeding (breakthrough or withdrawal bleeding that lasts > 10 consecutive days or excessive spotting that lasts > 10 consecutive days) while on conventional oral contraceptives.

- 56 11. History of thromboembolic disorder, vascular disease, cerebral vascular or coronary artery disease. 12. Uncontrolled or untreated hypertension (systolic BP > 140 mnHg and diastolic BP : 90 mmHg on more than two occasions). 13. Known or suspected carcinoma of the breast, endometrial carcinoma or known or suspected estrogen dependent neoplasia. 14. Undiagnosed abnormal genital bleeding. 15. History of hepatic adenomas or carcinomas. 16. History of cholestatic jaundice of pregnancy or jaundice with prior OC use. 17. Known or suspected pregnancy or currently breastfeeding. 18. Hyperlipidemia requiring active treatment with antihyperlipidemic agents. 19. History of diabetes mellitus, glucose intolerance or gestational diabetes. 20. History of abnormal laboratory value at screening 21. Any clinically significant abnormal finding or condition on history, screening, physical exam, pelvic exam or any laboratory finding which contraindicates the use of oral contraceptives. 22. Has participated in any clinical investigation within the 30 days prior to enrollment. 23. Has donated or had a loss of more than 500 cc of blood within the 30 days prior to enrollment.

-57 Treatment Regimen Description of Study Medication DP3-84/30 [0204] All tablets in the DP3-84/30 regimen; 84 tablets each containing 150 pg levonorgestrel/ 30 ig EE and 7 tablets each containing 30 jig of EE will be white unembossed tablets. One combination tablet will be taken each day for 84 days followed by 7 days of EE tablets in 91-day cycles repeated consecutively for approximately one year (4 cycles). Each DP3-84/30 dose kit will be packaged in a 3-part fold-out white blister card pack where each of the first two blister packs has 28 active tablets each and the third blister pack has 28 active tablets and 7 ethinyl estradiol tablets (35 tablets total) for each 91 day cycle. [0205] Each blister card pack will be sealed into a foil pouch, which will be labeled with a patient-specific label. Each foil pouch will contain an oxygen absorber. At each clinic visit one foil pouch, a patient information sheet, a PPI and a child resistant pouch will be dispensed. DP3-84/10 [0206] All tablets in the DP3-84/10 regimen; 84 tablets each containing 150 ig levonorgestrel/ 30-ptg EE and 7 tablets each containing 10 jig of EE will be white unembossed tablets. One combination tablet will be taken each day for 84 days followed by 7 days of EE tablets in 91-day cycles repeated consecutively for approximately one year (4 cycles). Each DP3-S4/10 dose kit will be packaged in a 3-part fold-out white blister card pack where each of the first two blister packs has 28 active tablets each and the third blister pack has 28 active tablets and 7 ethinyl estradiol tablets (35 tablets total) for each 91 day cycle. [0207] Each blister card pack will be sealed into a foil pouch, which will be labeled with a patient-specific label. Each foil pouch will contain an oxygen - 58 absorber. At each clinic visit one foil pouch, a patient information sheet, a PPI and a child resistant pouch will be dispensed. DP3-25/30 102081 All tablets in the DP3-25/30 regimen; 25 tablets each containing 150 jig levonorgestrel/ 30-jg EE and 3 tablets each containing 30 g of EE will be white unembossed tablets. One combination tablet will be taken each day for 25 days followed by 3 days of EE tablets in 28-day cycles repeated consecutively for approximately one year (13 cycles). Each DP3-25/30 blister card will have 25 active tablets followed by 3 ethinyl estradiol tablets (28 tablets total) for each 28 -day cycle. 102091 Each blister card will be sealed into a foil pouch, which will be labeled with a patient-specific label. Each foil pouch will contain an oxygen absorber. At clinic visits one through three, 3 foil pouches, a patient information sheet, a PPI and a child resistant pouch will be dispensed. At clinic visit four, 4 foil pouches, a patient information sheet, a PPI and a child resistant pouch will be dispensed. [0210] All patients, regardless of randomization, will be instructed to initiate OC therapy on the first Sunday following the beginning of their menstrual period ("Sunday starters"). Patients will be instructed to take their study medication at the same time each day. Day 1 of the study will be defined as the first day of study medication. Administration 102111 Designated personnel will dispense all study drugs. All study medications must be kept in a secured area at temperature ranging from approximately 15-25 *C (59-77 *F). All patients will be instructed to take one tablet per day at approximately the same time each day. All patients will be "Sunday starters"; that is all patients will begin study drug therapy on the first Sunday following the start of their previous menstrual cycle or completion of -59 prior oral contraceptive regimens. All patients enrolled in the study will maintain Sunday starts for each successive cycle. [0212] The end-of-study evaluation will take place 1 week following completion of withdrawal menses following the last cycle of study OC therapy. At the clinic visit during which patients receive the final supply of study medication, they will be counseled to use an alternative method of birth control during the interval between when they have finished study medication until they have completed the final study visit. [02131 Patients randomized to DP3-84/30 or DP3-84/10 will receive a 13 week supply (single cycle) of study drug at each clinic visit during Weeks 13, 26 and 39. Patients randomized to DP3-25/30 will receive a 12-week supply (three-cycles) of study drug at the initiation of the study and at clinic visits during Weeks 12 and 24. During the clinic visit at Week 36 patients randomized to DP3-25/30 will receive 16-week supply (four cycles) of study medication. Examinations/Tests - 60 Table 5. Study Schedule Parameter Screening Visit Visits Completion of 1 2-4" Therapy Informed consent X Medical and contraceptive X history Physical exam including X X pelvic exam Weight, vital signs X X X X Pap smear X X Randomization X Clinical laboratory tests' X X Urine pregnancy testC X X X X Study drug distribution X X Electronic diary distribution X Study drug compliance X X measurement Adverse event recording X X a Patients randomized to DP3-84/30 or DP3-84/10 will be seen at Weeks 13, 26 and 39. Patients randomized to DP3-25/30 will be seen at Weeks 12, 24, and 40. b Clinical laboratory tests include CBC, serum chemistry, lipid profile, urinalysis c Repeated on Visit 1 if the screening was completed more than 2 weeks prior to enrollment d For patients randomized to DP3 25/30, three (3) cycle supply will be dispensed at Weeks 12 and 24; a four (4) cycle supply will be dispensed at Week 40. Study Procedures by Visit Screening and Enrollment [02141 Patients will sign informed consent. Prior to enrollment, within four weeks prior to initiation of study therapy, all patients will undergo a screening evaluation that will include prior medical and contraceptive history, smoking history, physical examination including pelvic exam and Pap smear, vital signs and weight, and clinical laboratory tests including complete blood count (CBC), serum chemistry, lipid profile, urinalysis, and urine pregnancy test. [0215] All clinical laboratory evaluations (blood and urine) will be tested by a central laboratory. All investigators will be provided with a laboratory manual that outlines sampling and shipping procedures. [02161 If the screening evaluation is completed more than two weeks prior to the initiation of study therapy, the urine pregnancy test must be repeated at -61 Visit 1. Patients with a report of an abnormality on Pap smear will be disqualified for enrollment unless investigator decides the results are not clinically significant and will not interfere with conduct of the study. Investigator's decision must be documented. Patients who have had a normal Pap smear within the three months prior to enrollment in the study will not be required to have the test repeated. A copy of the results must be available in the patient's medical record. Any patient with a report of insufficient cells must have the test repeated and documented as normal prior to enrollment. Patients will then be enrolled in the study. Visit 1 [02171 Visit 1 will take place during the final week of the menstrual cycle prior to beginning study therapy (i.e., during menses for those patients not taking oral contraceptives or during Week 4 for those patients taking oral contraceptives). During Visit 1 patients will be randomized to one of the following treatment groups: DP3-84/30; levonorgestrel 150 pg/EE 30 jpg for S4 days + EE 30 pg for 7 days OR * DP3-84/10; levonorgestrel 150 jg/EE 30 jg for 84 days + EE 10 pg for 7 days OR * DP3-25/3; levonorgestrel 150 jg/EE 30 jig for 25 days + EE 30 pg for 3 days [0218] The treatment regimen assignment will be ascertained by randomization via Interactive Voice Response System (IVRS). The treatment group assignment will not be revealed to the patient prior to signing of the informed consent. [02191 A urine pregnancy test will be re-administered to those women who were screened more than two weeks prior to Visit 1. Study medication will be dispensed with patient instructions. An electronic diary will be given to each -62 patient. Each patient will be trained regarding the use and care of the electronic diary. Patients will be instructed to take each dose of study medication and to complete all diary entries at approximately the same time each day. Visits 2-4 [02201 All visits should take place within seven days prior to completion of study medication for that cycle. Any visit that takes place prior to the final week of the cycle will be recorded as a protocol deviation. Any visit that takes place following the final week of the cycle resulting in a lapse in study medication intake will be recorded as a protocol violation and will result in the patient being withdrawn from the study. Any visit that takes place following the final week of the cycle but does not result in a lapse in study medication (e.g., the patient received an emergency supply of study medication) will be recorded as a protocol deviation. [02211 Patients randomized to either DP3-84/30 or DP3-84/1 0 will be seen at Weeks 13, 26 and 39. Patients randomized to DP3-25/30 will be seen at Weeks 12, 24 and 36. During these visits, patients will be queried regarding adverse events, concomitant medications, change in smoking history, and compliance. Vital signs and weight will be recorded. A urine pregnancy test will be conducted. Used study medication will be returned and counted by the study pharmacist or designated personnel. Completion of Therapy [02221 The end-of-study evaluation will take place 1 week following completion of last cycle of the study drug. Patients will be counseled to use birth control during the interval between when they have finished study medication until they have completed the final study visit. Patients will undergo physical exam, including pelvic exam and pap smear. Vital signs and weight will be recorded. Blood and urine samples for clinical laboratory tests including CBC, serum chemistry, lipid profile, urinalysis and urine pregnancy -63 test will be obtained. Used study medication cards will be returned and counted by the study pharmacist or designated personnel. Patients will be queried regarding adverse events, concomitant medications, change in smoking history and compliance. The electronic diary will be returned. Post-Study Visit [02231 After study completion/withdrawal, patients will be followed via a phone call for occurrence of pregnancy and until the menstrual cycle returns to normal. The patient based on the cycle pattern prior to the study entry will determine return to normal menstrual cycle. The minimum period of follow up will be 3 months. Patients who decide to use a contraceptive method that regulates/alters menstrual cycle after study completion/withdrawal will be followed for 3 months via a phone call. [0224] Only those patients who have an on-going serious adverse event that has not resolved or those who become pregnant during the course of the study will be followed via clinic visits after completion of the study. Patients with on-going serious adverse events will be followed until the event has been satisfactory managed or resolved. Patients who are pregnant will be followed for eight weeks following delivery or termination of the pregnancy. Infants' health assessment will be followed for eight weeks following delivery. This follow-up may be in the form of a written report from a family physician, obstetrician or pediatrician. All serious adverse events that occur in the three months following discontinuation of therapy will be reported. SAEs that occur at any time after study completion/discontinuation will be reported if investigator determines it is drug-related. Early Termination [0225] Any patient who withdraws or is withdrawn from the study must return the investigational medication and electronic diary and will be required to complete all procedures for the final visit. All patients will be followed via a phone call for 3 months for the occurrence of pregnancy and until the -64 menstrual cycle return to normal. All patients will be followed via a phone call for three months for the occurrence of serious adverse events. Examinations and Procedures Physical Exam, Medical and Gynecologic Nistoy [02261 A complete physical and gynecologic exam, including PAP smear, will be performed at screening and at the completion of therapy or upon early withdrawal from the study. Any patient with an abnormal Pap smear will be disqualified for enrollment unless investigator decides the results are not clinically significant and will not interfere with conduct of the study. The Investigator's decision must be documented. Patients who have had a Pap smear reported as within normal limits within the three months prior to enrollment in the study will not be required to have the test repeated. A copy of the results must be available in the patient's medical record. Any patient with a report of insufficient cells must have the test repeated and documented by the investigator as within normal limits prior to enrollment. Laboratory Safety Tests 102271 Clinical laboratory tests will be performed at screening and at the completion of therapy or upon early withdrawal. All clinical laboratory tests will be done at one central laboratory. Laboratory tests will include CBC, serum chemistry, lipid profile, urinalysis, and urine pregnancy test. In addition, urine pregnancy tests will be conducted at every clinic visit and at the completion of therapy or upon early withdrawal from the study. All urine pregnancy tests will be performed using the Sure Step@ Pregnancy Test kit (Applied Biotech, Inc.).

-65 Pregnancy [0228] All patients will be followed for the occurrence of pregnancy for three months following completion of the study. This follow-up may be in the form of a telephone call. All pregnancies that occur during the course of the study or in the three months following completion of the study will be dated using ultrasound to establish the gestational age of the fetus. Patients who become pregnant during the course of the study due to method failure will be followed for eight weeks following delivery or termination of the pregnancy. Infants' health assessment will be followed for eight weeks following delivery. This follow-up may in the form of a documented telephone conversation with associated pediatrician or written report from the associated pediatrician. Electronic Diaries [0229] Patients will be asked to complete electronic diaries. The diary will be programmed to ask specific questions related to the study compliance, bleeding pattern and occurrence of symptoms that are commonly associated with the hormone fluctuation during the menstrual cycle. The questions will address dosage, compliance, bleeding pattern and honnone-related symptoms either on the scale from 0-3 or using 10 cm Visual Analogue Scale (VAS). [02301 Hand-held data acquisition devices will be used to collect patient responses. The electronic diary will provide patients with a menu-driven, graphical interface to enter diary information (as well as objective data) using a hand-held stylus. Data entry will be electronic and key fields must be completed properly before allowing patient to finish the report. Each report will be downloaded by dial-up network connection. [0231] The electronic diary will incorporate an alarm to remind the patient when to complete their reports. Alarm times will be set by the site and can be specific to the patient preference. The patient will be instructed to complete a diary on a daily basis. Retrospective data entry will not be allowed; reports cannot be completed for previous days. Once each question is completed the - 66 patient will confirm the response and will not be permitted to return to that question for modification. [0232] Information on the hormone-related symptoms to be collected is from the Calendar of Premenstrual Experiences (COPE) and Diagnostic and Statistical Manual of Mental Disorders Forth Edition (DSM-IV). 102331 The validity and reliability of the COPE instrument was assessed by Mortola, et al., Obstet. Gynecol. 89:179-83 (1990), who administered it throughout two consecutive ovulatory cycles to 36 rigidly screened women with PMS and to 18 controls. The validity of the visual analogue scales applied to the psychological symptoms associated with the PMDD has been previously documented. Treatment Modifications Based on Toxicity [02341 No significant toxicity is expected from the study medication. However, if the patient develops any symptoms or any abnormal laboratory parameter attributed to the drug, which are considered by the patient and/or physician to be of unacceptable severity, then the study medication should be discontinued. Concomitant Medications [02351 Patients will be queried regarding concomitant medication use at monthly phone calls and quarterly clinic visits. All concomitant medication use (both prescription and over-the-counter (OTC), including herbal medications and nutritional supplements) must be reported during the study, and recorded on the patient's Case Report Form (CRF). [0236] Patients who require the initiation of chronic therapy with drugs that are known to interact with OCs will be withdrawn from the study. Patients who require intermittent therapy with drugs known to interact with OCs (e.g. antibiotic therapy) will remain in the study and will receive counseling regarding the need for additional contraceptive protection during the entire cycle. Patients will be provided with the list of medications that are know to - 67 interact with OC and will be instructed to notify study coordinator as soon as medication is prescribed to receive proper counseling. Notification and counseling can be conducted via the phone and must be documented in the patient's CRF. Those cycles in which drugs known to interact with OC therapy are taken will not be used in the calculation of the pregnancy rate. 102371 The use of emergency contraceptive pills ("morning after pills") is prohibited in the study. Data from any patient who utilizes contraceptive pills others than those provided for the study will not be included in the calculation of the pregnancy rate for that cycle. Adverse Event Reporting 10238] An Adverse Event (AE) is any reaction, side effect, or other undesirable event that occurs in conjunction with the use of a drug, biological product or diagnostic agent in humans, whether or not the event is considered drug related. {02391 A serious adverse event (SAE) is one that meets any one of the following criteria: * Fatal or life threatening * Requires or prolongs inpatient hospitalization * Results in persistent or significant disability/incapacity 0 Congenital anomaly [02401 The term "life threatening" in the definition of "serious" refers to an event in which the patient was at risk of death at the time of the event; it does not refer to an event that hypothetically might have caused death if it were more severe. Medical and scientific judgment should be exercised in deciding whether an important medical event is serious. Although the event may not be immediately life threatening, fatal, or result in hospitalization, it should be considered serious when it jeopardizes the patient, or requires an intervention to prevent a serious outcome as defined above. 10241] The AE reporting period for this study begins at the Enrollment Visit and ends at the final clinic visit. The SAE reporting period will continue for 3 - 68 month after the final clinic visit. All SAEs will be followed through resolution or until investigator assesses the SAE as chronic or stable. [02421 A preexisting condition (i.e., a disorder present before the AE reporting period started and noted on the pretreatment medical history/physical form) should not be reported as an AE unless the condition worsens or episodes increase in frequency during the A.E reporting period. [02431 During the study AEs will be recorded through monthly phone calls and quarterly clinic visits. A call-in number will be provided to the patients who wish to report an adverse event between the scheduled phone calls and clinic visits. EXAMPLE 6 Multicenter Randomized Phase III Clinical Trial to Evaluate Two Continuous Oral Contraceptive Regimens in Combination with Fluoxetine Hydrochloride in Women Diagnosed with Premenstrual Syndrome (PMS) and Premenstrual Dysphoric Disorder (PMDD) Overview of the Study Design [02441 In a three-arm, parallel, randomized, multicenter, placebo-controlled, double-blinded study, the efficacy and safety of continuous oral contraceptive therapy as a ninety-one day regimen (84 days active combination therapy followed by low dose estrogen for 7 consecutive days (DP3-91)), or as a twenty-eight day regimen (21 day active combination therapy followed by low dose estrogen for 7 consecutive days (DP3-28)), in combination with fluoxetine hydrochloride administered for approximately 6 consecutive months to women diagnosed with PMS and/or PMDD who desire contraception, will be evaluated. [02451 A cohort of approximate 40-100 patients enrolled in each of the study arms will undergo endometrial biopsy (to test incidence of hyperplasia and carcinoma) prior to the initiation of study drug therapy and at the conclusion of the study or withdrawal.

-69 102461 Efficacy of the 28-day and 91-day regimens on premenstrual symptomatology will be measured by psychometric scales that include self administered Visual Analogue Scales (VAS) and a prospective daily symptoms chart to evaluate psychological and somatic symptoms. The VAS measures tension, irritability, dysphoria, sleeping and eating patterns, headache, bloating, pain and breast tenderness and weight gain symptoms. Total score of the psychological and somatic symptoms will be computed. The patient and blind observer will also complete the PMTS at each visit. Study Population 102471 Females ages 18 through 49 who are fluent in English and capable of giving informed consent, without contraindication to the use of oral .contraceptives and selective serotonin reuptake inhibitors (SSRIs), and meet the criteria for PMS including PMDD as defined in the diagnostic and statistical manual of mental disorders (DSM-IV). All patients will be counseled at the beginning of the study and at each study visit to use an alternative form of contraception. All patients will be followed for the occurrence of pregnancy during the course of the study. Patients who become pregnant during the course of the study will be followed for eight weeks following delivery or termination of the pregnancy. Infants will be followed for eight weeks following delivery. Dosage [0248] Patients will be randomized to one of the following: (1) Ninety-one day oral contraceptive therapy with ethinyl estradiol (DP3 91) and fluoxetine hydrochloride administered for two cycles where each cycle consists of: 150 gg levonorgestrel and 30 pLg ethinyl estradiol (days 1-84 of the first cycle and days 92-175 of the second cycle, 30 ig ethinyl estradiol (days 85-91 of the first cycle and days 176-1 S2 of the second cycle), 20 mg fluoxetine hydrochloride (days 1 182), and placebo to preserve blinding (days 183-196); -70 (2) Twenty-eight day oral contraceptive therapy with ethinyl estradiol (DP3-28) administered for 7 cycles where each cycle consists of: 150 gg levonorgestrel and 30 [tg ethinyl estradiol (days 1-21 for seven cycles), 30 pg ethinyl estradiol (days 22-28 for seven cycles), and 20 mg fluoxetine hydrochloride (days 1-196); or (3) Fluoxetine hydrochloride administered daily for 196 days: 20 mg fluoxetine hydrochloride per day (days 1-196) or placebo to preserve blinding (days 1-196). Study Management 102491 The study will utilize electronic case report forms and remote system management. Each investigator will be provided a programmed laptop computer dedicated to the study. This system allows the investigator to download and view patient diary data during clinic visits and also allows for rapid data queries by the study monitors. The system will also allow real-time on-line tracking of study site accrual rates, serious adverse events, pregnancies and study progress. Outcomes Measurement Scales 10250) The primary outcome will be defined as reduction in symptoms of PMS including PMDD as measured by the mean scores on Visual Analogue Scales (VAS) and the Premenstrual Tension Syndrome Scale (PMTS). The VAS will measure tension, irritability, dysphoria, sleeping and eating patterns, headache, bloating, pain and breast tenderness symptoms. Patients will be prompted to rate how they feel each day using 100 mm scales in which the descriptors range from "no symptoms" (0 mm) to "severe or extreme symptoms" (100 mm). The PMTS consists of a 36 item scale that will be completed by the patient and a 10-item scale completed by the blinded observer. Both scales rate premenstrual symptoms for a particular day; the total score can range from 0 (no symptoms) to 36 (all symptoms present and severe).

-71 102511 The secondary outcome will be defined as reduction in symptoms of PMS including PMDD as measured by the sub-score of somatic symptoms on VAS. The VAS will measure headache, bloating, pain and breast tenderness and weigh gain symptoms. Patients will be prompted to rate how they feel each day using 100 mm scales in which the descriptors range from "no symptoms" (0 mm) to "severe symptoms" (100 mm). In addition to information recorded in paper diaries, a standardized questionnaire will be used to determine whether the patient had any side effects. Statistical Analysis [02521 For the primary analysis, the mean of the VAS scales will be derived to obtain a single VAS score, which evaluates composite psychological and symptomatic outcomes. Mean percent reduction from baseline at the luteal phase will be compared using an analysis of covariance (ANCOVA) approach that evaluates the effects of the treatment group, center and treatment-by center interaction, after adjusting for the effect of the baseline VAS score. All statistical tests will be two-sided at the 0.05 level of significance. Pairwise comparisons will be made for each active treatment to placebo. Secondary analyses will include a set of statistical tests for the PMTS and 10-item blinded observer-based measures. EXAMPLE 7 (0253] Two multicenter, randomized, Phase III clinical trial studies were conducted following a protocol similar to the protocol presented in Example 5. During both clinical studies, the number of days of bleeding (withdrawal menses and unscheduled bleeding) was monitored. [02541 For the first clinical study, patients were randomized to one of the following oral contraceptive regimens: Levonorgestrel 150 pg/ethinyl estradiol (EE) 30 pig administered once daily for 84 days as a combination oral tablet followed by ethinyl estradiol 30 [g administered once daily for 7 days (DP3-84/30); - 72 * Levonorgestrel 150 jig/ethinyl estradiol 30 ig administered once daily for 84 days as a combination oral tablet followed by ethinyl estradiol 10 pg administered once daily for 7 days (DP3-84/10); or * Levonorgestrel 150 pg/ethinyl estradiol 30 gg administered once daily for 25 days as a combination oral tablet followed by ethinyl estradiol 30 Rg administered once daily for 3 days (DP3-25/30). For the second clinical study, patients were randomized to one of the following oral contraceptive regimens: * Levonorgestrel 150 gg/ethinyl estradiol (EE) 30 gg administered once daily for 84 days as a combination oral tablet followed by ethinyl estradiol 30 [tg administered once daily for 7 days (DP3-84/30); * Levonorgestrel 150 pg/ethinyl estradiol 30 jg administered once daily for 84 days as a combination oral tablet followed by ethinyl estradiol 10 pg administered once daily for 7 days (DP3-84/10); or * Levonorgestrel 150 jig/ethinyl estradiol 30 pg administered once daily for 25 days as a combination oral tablet followed by ethinyl estradiol 30 jg administered once daily for 3 days (DP3-25/30); or * Levonorgestrel 150 jig/ethinyl estradiol (EE) 30 jig administered once daily for 21 days as a combination oral tablet followed by 7 days of placebo (conventional 28-day oral contraceptive regimen ("Nordette")). Patients randomized to either the DP3-84/30 or DP3-84/10 regimens in both clinical studies received four 91-day cycles of therapy (the designated regimen). Patients randomized to the DP3-25/30 regimen for both clinical studies, or the conventional 28-day regimen in the second clinical study, received thirteen 28-day cycles of therapy. All patients received approximately 1 year of therapy. [02551 Tables 7 and 8 summarize the average number of days of breakthrough bleeding (defined as unscheduled bleeding and/or spotting) per cycle by treatment group, for the first and second clinical studies. The median (per monthly cycle) values in each table represent the median number of days of breakthrough bleeding per 91-day cycle converted to a 28-day cycle (median - 73 * or , depending on the number of days of combination therapy) for 84 25 comparison with "Nordette" (conventional 28-day regimen in the second clinical study). Table 7 also presents data from a third Phase III clinical study (Anderson, F.D., et al., Contraception 68:89-96 (2003)) that was conducted following a protocol similar to the protocol presented in Example 5, but in which the patients were randomized to one of the following four regimens: . Levonorgestrel 150 gg/ethinyl estradiol (EE) 30 pg administered once daily for 21 days as a combination oral tablet followed by 7 days of placebo ("Nordette"); or 0 Levonorgestrel 100 pg/ethinyl estradiol 20 ptg administered once daily for 21 days as a combination oral tablet followed by 7 days of placebo; or * Levonorgestrel 150 jtg/ethinyl estradiol 30 [tg administered once daily for 84 days as a combination oral tablet followed by 7 days of placebo ("Seasonale"); or * Levonorgestrel 100 1 .g/ethinyl estradiol (EE) 20 pig administered once daily for 84 days as a combination oral tablet followed by 7 days of placebo. The Seasonale and Nordette data from this third clinical study are presented in Table 7. All data presented in Table 8 were from the second clinical study.

-74 Table 7: Number of Days of Unscheduled Bleeding and/or Spotting Per Cycle, By Treatment Groups - Complete Cycles Only Regimen Median (Treatment Per Monthly Group)* Cycle N Mean SD Min Q1 Median Q3 Max Cycle DP3-84/30 1 751 15.4 14.55 0 4 11 24 74 2.8 2 609 12.5 13.38 0 3 7 20 82 1.8 3 515 10.0 11.12 0 2 7 14 62 1.8 4 420 9.5 11.17 0 2 5 13 68 1.3 DP3-84/10 1 769 14.3 13.52 0 3 11 21 73 2.8 2 625 9.5 10.51 0 2 5 14 63 1.3 3 531 7.3 9.12 0 1 4 10 50 1.0 4 443 7.5 9.33 0 1 4 10 58 1.0 Seasonale 1 385 16.4 15.0 0 3 14 25 84 3.5 2 331 12.3 13.0 0 2 7 19 66 1.8 3 296 10.8 12.4 0 1 6 15. 62 1.5 5 4 262 9.1 11.0 0 1 4 15 55 1.0 Nordette 1 214 2.1 3.1 0 0 1 3 19 2 210 1.9 2.2 0 0 1 3 12 3 204 1.7 2.3 0 0 1 2 12 4 194 1.3 1.8 0 0 1 2 14 5 188 1.6 2.0 0 0 1 2 11 6 184 1.5 1.9 0 0 1 2 14 7 178 1.4 1.6 0 0 1 2 8 8 177 1.6 2.0 0 0 1 2 14 9 172 1.6 2.1 0 0 1 2 16 10 170 1.7 2.3 0 0 1 3 20 11 163 2.0 2.6 0 0 1 3 19 12 162 1.6 2.0 0 0 1 3 11 13 159 1.6 2.1 0 0 1 2 13 * Data for the treatment groups DP3-84/30 and DP3-84/10 are from the first clinical study. Data from a third clinical study in which the corresponding non-estrogen-bridged extended cycle regimen ("Seasonale") and a non-estrogen-bridged conventional 28-day regimen ("Nordette") were administered are included for comparison.

- 75 Table 8: Number of Days of Unscheduled Bleeding and/or Spotting Per Cycle, By Treatment Groups - Complete Cycles Only (Second Clinical Study) Regimen Median (Treatment Per Monthly Group)* Cycle N Mean SD Min Q1 Median Q3 Max Cycle DP3-84/30 1 70 18.7 17.17 0 6 14.5 27 76 3.6 2 54 10.4 8.36 0 4 8.5 16 38 2.1 3 45 8.8 9.57 0 2 6 14 48 1.5 4 36 9.2 8.54 0 2 6 14.5 28 1.5 DP3-84/10 1 75 15.1 13.81 0 4 11 22 50 2.8 2 59 9.3 10.02 0 2 6 16 45 1.5 3 50 8.2 8.71 0 2 5 12 37 1.3 4 41 10.0 11.15 0 2 6 16 50 1.5 DP3-25/30 1 82 2.6 3.37 0 0 2 4 14 1.7 2 78 6.4 6.06 0 1 5 10 25 4.2 3 68 7.7 6.58 0 2.5 6 13 25 5.0 4 66 5.8 5.57 0 2 5 8 24 4.2 5 65 4.8 5.33 0 0 3 6 22 2.5 6 59 4.9 5.14 0 1 4 7 25 3.4 7 54 4.9 4.47 0 2 4 7 22 3.4 8 51 4.8 4.96 0 1 4 7 20 3.4 9 46 4.4 4.44 0 1 3 7 19 2.5 10 42 5.7 5.36 0 1 4 8 20 3.4 11 41 3.7 3.59 0 1 3 6 14 2.5 12 39 4.1 5.22 0 0 3 6 20 2.5 13 35 4.3 4.22 0 1 3 6 15 2.5 Nordette 1 85 2.5 3.46 0 0 1 3 18 2 80 1.9 2.27 0 0 1 3 13 3 72 1.8 2.11 0 0 1 3 8 4 69 1.4 1.65 0 0 1 2 8 5 67 1.4 1.93 0 0 1 2 10 6 61 1.5 1.97 0 0 1 2 8 7 59 1.6 2.42 0 0 1 2 11 8 57 1.6 2.70 0 0 1 2 14 9 53 1.9 2.80 0 0 1 2 13 10 52 1.9 2.47 0 0 1 3 9 11 49 1.2 1.43 0 0 1 2 6 12 47 1.0 1.93 0 0 0 1 10 13 45 2.6 2.98 0 1 2 4 14 * Data for all treatment groups are from the second clinical study.

- 76 [02561 Tables 9 and 10 summarize the average number of days of withdrawal bleeding (defined as scheduled bleeding and/or spotting) per cycle by treatment group. Withdrawal bleeding includes any day for which the patient did not take a combination pill (days 85-91 for the DP3-S4/30 and DP3-84/10 treatment groups, and days 26-28 for the DP3-25/30 treatment group). Table 11 summarizes the percentage of patients in the first and second clinical studies who experienced withdrawal bleeding during the withdrawal period.

-77 Table 9: Number of Days of Scheduled Bleeding and/or Spotting Per Cycle, By Treatment Groups - Complete Cycles Only Regimen (Treatment Group)* Cycle N Mean SD Min Q1 Median Q3 Max DP3-84/30 1 751 3.1 2.20 0 1 3 5 7 2 609 2.8 2.15 0 1 3 4 7 3 515 2.5 2.14 0 1 2 4 7 4 420 2.5 2.22 0 0 2 4 7 DP3-84/10 1 769 3.3 2.08 0 2 3 5 7 2 625 3.1 2.05 0 1 3 5 7 3 531 2.8 2.02 0 1 3 4 7 4 443 2.7 2.03 0 1 3 4 7 Seasonale 1 385 4.0 2.1 0 3 4 6 7 2 331 3.6 2.2 0 1 4 6 7 3 296 3.4 2.2 0 2 4 5 7 4 262- 3.6 2.4 0 2 4 6 7 Nordette 1 214 3.4 1.5 0 3 3 4 7 2 210 3.1 1.6 0 2 3 4 7 3 204 3.1 1.6 0 2 3 4 7 4 194 3.0 1.7 0 2 3 4 7 5 188 3.0 1.7 0 2 3 4 7 6 184 2.9 1.7 0 2 3 4 7 7 178 2.8 1.5 0 2 3 4 6 8 177 2.9 1.8 0 2 3 4 7 9 172 2.9 1.6 0 2 3 4 6 10 170 2.7 1.7 0 1 3 4 7 11 163 2.7 1.7 0 2 3 4 6 12 162 2.7 1.7 0 1 3 4 7 13 159 3.3 1.9 0 2 3 5 7 * Data for the treatment groups DP3-84/30 and DP3-84/10 are from the first clinical study. Seasonale and Nordette data are from the third clinical study.

- 78 Table 10: Number of Days of Scheduled Bleeding and/or Spotting Per Cycle, By Treatment Groups - Complete Cycles Only (Second Clinical Study) Regimen (Treatment Group)* Cycle N Mean SD Min Q1 Median Q3 Max DP3-84/30 1 70 3.4 2.17 0 2 4 5 7 2 54 2.4 2.03 0 0 2 4 6 3 45 2.6 2.03 0 1 3 4 7 4 36 2.8 2.07 0 1 2.5 4.5 7 DP3-84/10 1 75 3.3 2.15 0 2 3 5 7 2 59 2.7 2.39 0 0 3 5 7 3 50 3.0 2.29 0 1 3 5 7 4 41 3.0 2.47 0 1 2 5 7 DP3-25/30 1 82 0.5 0.88 0 0 0 1 3 2 78 0.7 1.13 0 0 0 1 3 3 68 0.9 1.18 0 0 0 2 3 4 66 0.6 1.05 0 0 0 1 3 5 65 0.6 0.90 0 0 0 1 3 6 59 0.8 1.09 0 0 0 2 3 7 54 0.7 1.04 0 0 0 1 3 8 51 0.6 0.87 0 0 0 1 3 9 46 0.4 0.68 0 0 0 1 3 10 42 0.7 1.12 0 0 0 1 3 11 41 0.4 0.83 0 0 0 0 3 12 39 0.4 0.74 0 0 0 1 3 13 35 0.7 0.96 0 0 0 1 3 Nordette 1 85 3.2 1.76 0 2 3 4 7 2 80 3.0 1.72 0 2 3 4 7 3 72 2.9 1.68 0 2 3 4 7 4 69 2.7 1.72 0 1 3 4 6 5 67 2.5 1.63 0 1 2 4 5 6 61 2.7 1.78 0 1 3 4 7 7 59 2.7 2.01 0 1 3 4 7 8 57 2.6 2.00 0 1 3 4. 7 9 53 2.8 1.69 0 2 3 4 6 10 52 2.6 1.83 0 1 3 4 7 11 49 2.7 1.73 0 2 3 4 7 12 47 2.7 1.66 0 1 3 4 6 13 45 2.9 2.01 0 1 3 4 7 * Data for all treatment groups are from the first clinical study.

- 79 Table 11: Percentage of Patients Reporting Bleeding and/or Spotting During the Scheduled Withdrawal Bleeding Period. Regimen Number of Clinical (Treatment Complete Study Group) Cycle Cycles N (%) DP3-84/30 1 751 630 (83.9) 2 609 481 (79.0) 3 515 390 (75.7) 4 420 304 (72.4) DP3-84/10 1 769 659 (85.7) 2 625 530 (84.8) 3 531 430 (81.0) 4 443 361 (81.5) DP3-84/30 1 70 59 (84.3) 2 54 40 (74.1) 3 45 35 (77.8) 4 36 32 (88.9) DP3-84/10 1 75 64 (85.3) 2 59 41 (69.5) 3 50 40 (80.0) 4 41 32 (78.0) DP3-25/30 1 82 21 (25.6) 2 78 25 (32.1) 3 68 27 (39.7) 4 66 22 (33.3) 5 65 22 (33.8) 6 59 23 (39.0) 7 54 20 (37.0) 8 51 20 (39.2) 9 46 14 (30.4) 10 42 14 (33.3) 11 41 9 (22.0) 12 39 10 (25.6) 13 35 16 (45.7) Nordette 1 85 75 (88.2) 2 80 72 (90.0) 3 72 65 (90.3) 4 69 60 (87.0) 5 67 56 (83.6) 6 61 53 (86.9) 7 59 47 (79.7) 8 57 44 (77.2) 9 53 46 (86.8) 10 52 43 (82.7) 11 49 41 (83.7) 12 47 41 (87.2) 13 45 38 (84.4) -80 102571 Table 12 presents the percentage of patients in each treatment group who reported no bleeding and/or spotting during the defined withdrawal bleeding period. Data from both the first and second clinical studies are presented. Table 13 presents the percentage of patients in each treatment group from the first clinical study who did not report any bleeding and/or spotting during the entire cycle. Table 13 also presents the percentage of patients in the Seasonale and Nordette treatment groups in the third clinical study who reported no bleeding and/or spotting during the entire cycle.

-81 Table 12: Percentage of Patients Not Reporting Bleeding and/or Spotting During the Scheduled Withdrawal Bleeding Period. Number of Clinical Regimen Complete Study (Treatment Group) Cycle Cycles N (%) DP3-84/30 1 751 121 (16.1) 2 609 128 (21.0) 3 515 125 (24.3) 4 420 116 (27.6) DP3-84/10 1 769 110 (14.3) 2 625 95 (15.2) 3 531 101 (19.0) 4 443 82 (18.5) DP3-84/30 1 70 11 (15.7) 2 54 14 (25.9) 3 45 10 (22.2) 4 36 4 (11.1) DP3-84/10 1 75 11 (14.7) 2 59 18 (30.5) 3 50 10 (20.0) 4 41 9 (22.0) DP3-25/30 1 82 61 (74.4) 2 78 53 (67.9) 3 68 41 (60.3) 4 66 44 (66.7) 5 65 43 (66.2) 6 59 36 (61.0) 7 54 34 (63.0) 8 51 31 (60.8) 9 46 32 (69.6) 10 42 28 (66.7) 11 41 32 (78.0) 12 39 29 (74.4) 13 35 19 (54.3) Nordette 1 85 10 (11.8) 2 80 8 (10.0) 3 72 7 (9.7) 4 69 9 (13.0) 5 67 11 (16.4) 6 61 8 (13.1) 7 59 12 (20.3) 8 57 13 (22.8) 9 53 7 (13.2) 10 52 9 (17.3) 11 49 8 (16.3) 12 47 6 (12.8) 13 45 7 (15.6) - 82 Table 13: Percentage of Patients Not Reporting Bleeding and/or Spotting During a Cycle. Clinical Number of Study Regimen Complete (Treatment Group) Cycle Cycles N (%) DP3-84/30 1 751 24 (3.2) 2 609 23 (3.8) 3 515 23 (4.5) 4 420 33 (7.9) DP3-84/10 1 769 16 (2.1) 2 625 28 (4.5) 3 531 33 (6.2) 4 443 28 (6.3) Seasonale 1 385 4 (1.0) 2 331 6 (1.8) 3 296 11 (3.7) 4 262 9 (3.4) Nordette 1 214 6 (2.8) 2 210 5 (2.3) 3 204 13 (6.4) 4 194 11 (5.7) i- 5 188 8 (543) 6 184 7 (3.8) 7 178 10 (5.6) 8 177 16 (9.0) 9 172 12 (7.0) 10 170 12 (7.1) 11 163 10 (6.1) 12 162 9 (5.6) 13 159 11 (6.9) [02581 Figures 1 through 5 show the distribution of bleeding and spotting among patients in the various treatment groups from the first and second clinical studies. Figures 1 and 2 present data for patients from the DP3-84/30 and DP3-84/10 treatment groups, respectively, from the first clinical study. Figures 3, 4, and 5 present data for patients from the DP3-84/30, DP3-84/10, and DP3-25/30 treatment groups from the second clinical study.

- 83 EXAMPLE 8 [02591 Adverse events reported by patients during the course of the clinical studies of Example 7 were recorded. An "adverse event" was defined as any reaction, side effect, or other undesirable event that occurred in conjunction with the use of the drug, biological product or diagnostic agent during the study, whether or not the event was considered to be related to the study drug (see the protocol in Example 5). The percentage of patients in the first and second clinical studies reporting certain adverse events are presented in Tables 14 through 20. Each table also includes similar data from the third clinical study. [02601 Tables 14 and 15 present the percentage of patients in the first and second clinical studies who reported menorrhagia and dysmenorrhoea as adverse events. Corresponding data from the third clinical study are also presented. The adverse event coding (MedDRA) may have varied between the first and third clinical studies, so that some of the adverse event reports in the first clinical study that could have been identified as menorrhagia may have been identified as intermenstrual bleeding.

- 84 Table 14: Incidence of Menorrhagia, by Treatment Group and Study Regimen (Treatment Clinical Study Group) N (%) DP3-84/30 80 (8.90) First DP3-84/10 61 (6.79) Third Seasonale 53 (11.6) Nordette 6 (2.7) DP3-84/30 7 (7.6) DP3-84/10 4 (4.3) Second DP3-25/30 2 (2.3) Nordette 2 (2.3) Table 15: Incidence of Dysmenorrhoea, by Treatment Group and Study Regimen (Treatment Clinical Study Group) N (%) DP3-84/30 40 (4.5) First DP3-84/10 37 (4.1) Third Seasonale 26 (5.7) Nordette 9 (4.0) DP3-84/30 3 (3.3) DP3-84/10 2 (2.1) Second DP3-25/30 1 (1.1) Nordette 4 (4.5) [02611 Table 16 presents the percentage of patients in the first and second clinical studies who reported acne as an adverse event. The data include all reports of "Acne NOS," "Acne Aggravated," or "Acne Cystic" as adverse events. ("NOS" refers to "no other symptom.") Corresponding data from the third clinical study are also included.

- 85 Table 16: Incidence of Acne, by Treatment Group and Study Regimen (Treatment Clinical Study Group) N (%) First DP3-84/30 57 (6.3) DP3-84/10 54 (6.0) Third Seasonale 21 (4.6) Nordette 10 (4.4) DP3-84/30 3 (3.3) DP3-84/10 9 (9.6) Second DP3-25/30 2 -(2.3) Nordette 2 (2.3) [0262] Table 17 presents the percentage of patients in the first and second clinical studies who reported the following categories of infections as adverse events: " "Bladder Infection NOS" * "Nasopharyngitis" (including "Pharyngitis Streptococcal") " "Sinusitis NOS" (including "Sinusitis Acute NOS") " URI (including "Upper Respiratory Tract Infection NOS"; "Upper Respiratory Tract Infection Viral NOS"; and "Respiratory Tract Infection NOS") " UTI (including "Urinary Tract Infection NOS"; and "Urinary Tract Infection bacterial NOS)" e "Vaginitis NOS" (including "Vaginitis Bacterial NOS; and Vulvovaginitis NOS") * "Vaginosis Fungal NOS" Corresponding data from the third clinical study are also included.

-86 Table 17: Incidence of Infection, by Treatment Group and Study Regimen (Treatment Infection Study Group) N (%) Bladder DP3-84/30 10 (1.1) Infection First DP3-84/10 10 (1.1) Seasonale 6 (1.3) Third Nordette 7 (3.1) DP3-84/30 0 DP3-84/10 0 Second DP3-25/30 0 Nordette 1 (1.1) Nasopharyngitis First DP3-84/30 98 (10.9) DP3-84/10 103 (11.5) Third Seasonale 106 (23.2) Nordette 70 (31.0) DP3-84/30 17 (IS.5) DP3-84/10 13 (13.8) Second DP3-25/30 14 (16.1) Nordette 13 (14.8) Sinusitis First DP3-84/30 66 (7.3) DP3-84/10 65 (7.2) Seasonale 46 (10.1) Third Nordette 25 (11.1) DP3-84/30 1 (1.1) DP3-84/10 7 (7.4) Second DP3-25/30 4 (4.6) Nordette 3 (3.4) URI First DP3-84/30 43 (4.8) DP3-84/10 54 (6.0) Third Seasonale 29 (6.4) Nordette 24 (10.6) Second DP3-84/30 1 (1.1) DP3-S4/10 5 (5.3) DP3-25/30 3 (3.4) -87 Regimen (Treatment Infection Study Group) N (%) Nordette 1 (1.1) UTI DP3-84/30 36 (4.0) First DP3-84/10 45 (5.0) Third Seasonale 20 (4.4) Nordette 14 (6.2) DP3-84/30 2 (2.2) DP3-84/10 5 (5.3) Second DP3-25/30 6 (6.9) Nordette 7 (8.0) Vaginitis First DP3-84/30 16 (1.8) DP3-84/10 22 (2.5) Third Seasonale 11 (2.4) Nordette 5 (2.2) DP3-84/30 2 (2.2) DP3-84/10 5 (5.3) Second DP3-25/30 3 (3.4) Nordette 4 (4.5) Vaginosis First DP3-84/30 25 (2.8) DP3-84/10 20 (2.2) Third Seasonale 9 (2.0) Nordette 4 (1.8) DP3-84/30 2 (2.2) Second DP3-84/10 1 (1.1) DP3-25/30 3 (3.4) Nordette 1 (1.1) [02631 Table 18 presents the percentage of patients in the first and second clinical studies who reported headache as an adverse event. The data include all reports of "Headache NOS," "Tension Headache," "Sinus Headache," and "Headache NOS Aggravated" as adverse events. Data from the third clinical study is also included.

- 88 Table 18: Incidence of Headache, by Treatment Group and Study Regimen (Treatment Study Group) N (%) DP3-84/30 63 (7.0) First DP3-84/10 58 (6.5) Third Seasonale 110 (24.1) Nordette 79 (35.0) DP3-84/30 8 (8.7) DP3-S4/10 4 (4.3) Second DP3-25/30 7 (8.0) Nordette 5 (5.7) [0264] Table 19 presents the percentage of patients in the first and second clinical studies who reported nausea as an adverse event. The data include all reports of "Nausea" and Nausea Aggravated" as adverse events. Data from the third clinical study is also included. Table 19: Incidence of Nausea, by Treatment Group and Study Regimen (Treatment Study Group) N (%) First DP3-84/30 51 (5.7) DP3-84/10 47 (5.2) Third Seasonale 34 (7.5) Nordette 21 (9.3) DP3-84/30 5 (5.4) DP3-84/10 3 (3.2) Second DP3-25/30 2 (2.3) Nordette 6 (6.8) [02651 Table 20 presents the percentage of patients in the first and second clinical studies who reported depression as an adverse event. The data include all reports of "Depression" and "Depression Aggravated" as adverse events. Data from the third clinical study is also included.

-89 Table20: Incidence of Depression, by Treatment Group and Study Regimen (Treatment Study Group) N (%) DP3-84/30 35 (3.9) First DP3-84/10 38 (4.2) Third Seasonale 10 (2.2) Nordette 14 (6.2) DP3-84/30 4 (4.3) ' DP3-84/10 4 (4.3) Second DP3-25/30 2 (2.3) Nordette 1 (1.1) EXAMPLE 9 102661 Preliminary calculations of the incidence of pregnancy were performed for patients participating in the first clinical study of Examples 7 and 8. The results are presented in Tables 21, 22 and 23. 102671 Table 21 presents the number of patients weighing 70 kg or more, and those weighing less than 70 kg, who became pregnant during the course of administration of the DP3-84/30 or DP3-84/10 regimen in the first clinical study. Table 21: Pearl Index Calculations of Treatment Failure Rates: For all Patients, by Weight and Treatment - Completed Cycles Only (First Clinical Study) Number of Regimen Number of 28-Day Number of (Treatment Weight Complete Patient On-Drug Pearl Group) Category Cycles Months Pregnancies Index DP3-84/30 < 70 kg 1372 4459.0 13 3.79 D 70 kg 918 2983.5 6 2.61 DP3-84/10 <70 kg 1380 4485.0 5 1.45 I 70 kg 986 3204.5 3 1.22 [02681 Patients in the first clinical study were also monitored after the end of the study for the occurrence of pregnancy. Tables 22 and 23 present the number of pregnancies that occurred for patients in the DP3-84/30 and DP3- - 90 84/10 treatment groups after the last dose administered at the end of the study, within two weeks of the last dose, and within one month of the last dose. The values in Tables 22 and 23 are preliminary pending confirmation of the last date of study medication and date of conception. The data is presented based on the last dose taken from the Pregnancy Information obtained during the study, or from the Case Report Form Pregnancy Information. Based on Last Dose from Pregnancy Information Regimen Within 2 Within 1 (Treatment Total Number After Last Weeks of Month of Group) of Pregnancies Dose Last Dose Last Dose DP3-84/30 36 19 (52.8%) 5 (13.9%) 11(30.6%) DP3-84/10 22 15(68.2%) 4 18.2%) 10 (45.5%) Based on Last Dose from Case Report Form Pregnancy Information Regimen Within 2 Within 1 (Treatment Total Number After Last Weeks of Month of Group) of Pregnancies Dose Last Dose Last Dose DP3-84/30 36 19(52.8%) 4(11.1%) 11 (30.6%) DP3-84/10 22 14 (63.6%) 3 (13.6%) 9 (40.9%) EXAMPLE 10 [02691 A single-dose, open-label, one period pharmacokinetic study was conducted with 24 healthy, female, adult subjects to evaluate the single dose and steady-state pharmacokinetics of tablets containing 0.150 mg levonorgestrel and 0.030 mg ethinyl estradiol. Study participants were required to take one tablet (1 x 0.150 mg levonorestrel/0.030 mg ethinyl estradiol) once a day for 84 consecutive days followed by 7 days of one tablet of containing only 0.030 mg of ethinyl estradiol. [02701 Following dosing on Day 1, serial blood samples were collected pre dose and at intervals over 24 hours after dosing. On Study Day 18, 19 and 20, samples were collected prior to dosing. On Day 21, samples were collected pre-dose and at intervals over 24 hours post-dose. On Study Day 81, 82, and 83, samples were collected prior to dosing. On Day 84, samples were collected pre-dose and at intervals thereafter. The plasma concentrations of -91 levonorgestrel and ethinyl estradiol were measured using fully validated analytical procedures. On Study Days 88, 89, 90, and 91, samples were collected prior to dosing with the ethinyl estradiol only tablets. On Study Day 91, samples were collected prior to dosing and for 96 hours post-dosing. Samples from the pre-dose sample on Day 91 and later were analyzed for plasma concentration of ethinyl estradiol only. [0271] During the course of the study, blood samples were also collected and analyzed for Follicle Stimulating Hormone (FSH), estradiol, Luteinizing Hormone (LH), free testosterone, and total testosterone predose on Days 1, 21, 84, 91, and on Days 98, 105, 119, 133, and 147. Plasma concentrations of each hormone were measured using standard commercially available clinical assays. [0272] Figures 6 through 10 present the minimum ("Min"), maximum ("Max"), and media plasma concentrations of FSH, estradiol, LH, free testosterone and total testosterone of the patients during the course of this study, during 84 days of administration of the levonorgestrel/ethinyl estradiol, followed by 7 days of administration of ethinyl estradiol. Plasma concentrations of the hormones are also shown up to about 56 days (to Day 147) after completion of administration, during which no hormones were administered to the patients. The plasma concentration of each hormone at Day 1 represents the plasma concentration measured before the beginning of administration of the levonorgestrel/ethinyl estradiol regimen, and thus represents baseline plasma concentrations. [02731 Application of the compounds, compositions and methods of the present invention for the medical or pharmaceutical uses described can be accomplished by any clinical, medical, and pharmaceutical methods and techniques as are presently or prospectively known to those skilled in the art. It will therefore be appreciated that the various embodiments which have been described above are intended to illustrate the invention and various changes and modifications can be made in the inventive method without departing from the spirit and scope thereof.

- 92 [02741 Having now fully described this invention, it will be understood to those of ordinary skill in the art that the same can be performed within a wide and equivalent range of conditions, formulations, and other parameters without affecting the scope of the invention or any embodiment thereof. All patents, patent applications, and 5 publications cited herein are fully incorporated by reference herein in their entirety. 102751 Throughout this specification and the claims which follow, unless the context requires otherwise, the word "comprise", and variations such as "comprises" and "comprising", will be understood to imply the inclusion of a stated integer or step or group of integers or steps but not the exclusion of any other integer or step or group 10 of integers or steps. [0276] The reference in this specification to any prior publication (or information derived from it), or to any matter which is known, is not, and should not be taken as an acknowledgment or admission or any form of suggestion that that prior publication (or information derived from it) or known matter forms part of the 15 common general knowledge in the field of endeavour to which this specification relates.

Claims

1. A method of reducing breakthrough bleeding in a female in need thereof, the method comprising administering to the female a combination of estrogen and progestin for a period of about 81 to about 110 consecutive days, followed by administration of estrogen for a period of about 2 to about 10 consecutive days.

2. A method of reducing breakthrough bleeding in a female in need thereof, the method comprising administering to the female a combination of estrogen and progestin for a period of more than 20 consecutive days, followed by administration of estrogen for a period of about 2 to about 10 consecutive days, wherein an antidepressant is administered (i) in combination with the estrogen for the period of about 2 to about 10 consecutive days, (ii) continuously, (iii) intermittently, (iv) one time, or (v) once weekly.

3. The method of claim 1, wherein the estrogen that is administered in combination with progestin for a period of about 81 to about 110 consecutive days is administered in a daily amount equivalent to about 5 pg to about 50 pg of ethinyl estradiol, and the progestin that is administered in combination with estrogen for a period of about 81 to about 110 consecutive days is administered in a daily amount equivalent to about 0.05 mg to about 1.5 mg of levonorgestrel.

4. The method of claim 3, wherein the estrogen that is administered for a period of about 2 to about 10 days is administered in a daily amount equivalent to about 5 pg to about 50 pg of ethinyl estradiol. -94

5. The method of claim 4, wherein the estrogen that is administered for a period of about 2 to about 10 days is administered in a daily amount equivalent to about 10 pLg to about 30 pg of ethinyl estradiol.

6. The method of claim 4, wherein the combination of estrogen and progestin is administered for a period of about 81 to about 89 consecutive days.

7. The method of claim 4, wherein said female is a peri menopausal female.

8. A method of inducing regular, predictable withdrawal bleeding in a female in need thereof, said method comprising administering to the female a combination of estrogen and progestin for a period of about S to about 110 consecutive days, followed by administration of estrogen for a period of about 2 to about 10 consecutive days.

9. A method of inducing regular, predictable withdrawal bleeding in a female in need thereof, said method comprising administering to the female a combination of estrogen and progestin for a period of more than 20 consecutive days, followed by administration of estrogen for a period of about 2 to about 10 consecutive days, wherein an antidepressant is administered (i) in combination with the estrogen for the period of about 2 to about 10 consecutive days, (ii) continuously, (iii) intermittently, (iv) one time, or (v) once weekly.

10. The method of claim 8, wherein the estrogen that is administered in combination with progestin for a period of about 81 to about 110 consecutive days is administered in a daily amount equivalent to about 5 pg to about 50 pg of ethinyl estradiol, and the progestin that is administered in combination with estrogen for a period of about 81 to about 110 consecutive - 95 days is administered in a daily amount equivalent to about 0.05 mg to about 1.5 mg of levonorgestrel.

11. The method of claim 10, wherein the estrogen that is administered for a period of about 2 to about 10 consecutive days is administered in a daily amount equivalent to about 5 pg to about 50 pg of ethinyl estradiol.

12. The method of claim 10, wherein the estrogen that is administered for a period of about 2 to about 10 consecutive days is administered in a daily amount equivalent to about 10 pg to about 30 pg of ethinyl estradiol.

13. The method of claim 11, wherein the combination of estrogen and progestin is administered for a period of about 81 to about 89 consecutive days.

14. The method of claim 10, wherein said female is a peri menopausal female.

15. A method of reducing frequency of onset of a menstrual cycle or withdrawal bleed in a female in need of delayed or reduced menstruation, said method comprising administering to said female a combination of estrogen and progestin for a period of about 81 to about 110 consecutive days, followed by administration of estrogen for a period of about 2 to about 10 consecutive days.

16. A method of reducing frequency of onset of a menstrual cycle or withdrawal bleed in a female in need of delayed or reduced menstruation, said method comprising administering to said female a combination of estrogen and progestin for a period of more than about 20 consecutive days, followed by administration of estrogen for a period of about 2 to about 10 - 96 consecutive days, wherein an antidepressant is administered (i) in combination with the estrogen for the period of about 2 to about 10 consecutive days, (ii) continuously, (iii) intermittently, (iv) one time, or (v) once weekly.

17. The method of claim 15, wherein the estrogen that is administered in combination with progestin for a period of about 81 to about 110 consecutive days is administered in a daily amount equivalent to about 5 jig to about 50 pg of ethinyl estradiol, and the progestin that is administered in combination with estrogen for a period of about 81 to about 110 consecutive days is administered in a daily amount equivalent to about 0.05 mg to about 1.5 mg of levonorgestrel.

18. The method of claim 17, wherein the estrogen that is administered for a period of about 2 to about 10 consecutive days is administered in a daily amount equivalent to about 5 pg to about 50 pg of ethinyl estradiol.

19. The method of claim 18, wherein the estrogen that is administered for a period of about 2 to about 10 consecutive days is administered in a daily amount equivalent to about 10 pig to about 30 4g of ethinyl estradiol.

20. The method of claim 18, wherein the combination of estrogen and progestin is administered for a period of about 81 to about 89 consecutive days.

21. The method of claim 18, wherein said female is a peri menopausal female.

22. A method of inducing amenorrhea in a female in need thereof, said method comprising administering to said female a combination of estrogen and progestin for a period of about 81 to about 110 consecutive days, - 97 followed by administration of estrogen for a period of about 2 to about 10 consecutive days.

23. A method of inducing amenorrhea in a female in need thereof, said method comprising administering to said female a combination of estrogen and progestin for a period of more than 20 consecutive days, followed by administration of estrogen for a period of about 2 to about 10 consecutive days, wherein an antidepressant is administered (i) in combination with the estrogen for the period of about 2 to about 10 consecutive days, (ii) continuously, (iii) intermittently, (iv) one time, or (v) once weekly.

24. The method of claim 22, wherein the estrogen that is administered in combination with progestin for a period of about 81 to about 110 consecutive days is administered in a daily amount equivalent to about 5 pg to about 50 ig of ethinyl estradiol, and the progestin that is administered in combination with estrogen for a period of about 81 to about 110 consecutive days is administered in a daily amount equivalent to about 0.05 mg to about 1.5 mg of levonorgestrel.

25. The method of claim 24, wherein the estrogen that is administered for a period of about 2 to about 10 consecutive days is administered in a daily amount equivalent to about 5 pig to about 50 ig of ethinyl estradiol.

26. The method of claim 25, wherein the estrogen that is administered for a period of about 2 to about 10 consecutive days is administered in a daily amount equivalent to about 10 pg to about 30 pg of ethinyl estradiol.

27. The method of claim 25, wherein the combination of estrogen and progestin is administered for a period of about 81 to about 89 consecutive days. -98

28. A method of minimizing uterine bleeding in a female in need thereof, said method comprising administering to said female a combination of estrogen and progestin for a period of about 81 to about 110 consecutive days, followed by administration of estrogen for a period of about 2 to about 10 consecutive days.

29. A method of minimizing uterine bleeding in a female in need thereof, said method comprising administering to said female a combination of estrogen and progestin for a period of more than 20 consecutive days, followed by administration of estrogen for a period of about 2 to about 10 consecutive days, wherein an antidepressant is administered (i) in combination with the estrogen for the period of about 2 to about 10 consecutive days, (ii) continuously, (iii) intermittently, (iv) one time, or (v) once weekly.

30. The method of claim 28, wherein the estrogen that is administered in combination with progestin for a period of about 81 to about 110 consecutive days is administered in a daily amount equivalent to about 5 pg to about 50 pg of ethinyl estradiol, and the progestin that is administered in combination with estrogen for a period of about 81 to about 110 consecutive days is administered in a daily amount equivalent to about 0.05 mg to about 1.5 mg of levonorgestrel.

31. The method of claim 30, wherein the estrogen that is administered for a period of about 2 to about 10 consecutive days is administered in a daily amount equivalent to about 5 pg to about 50 pg of ethinyl estradiol.

32. The method of claim 30, wherein the estrogen that is administered for a period of about 2 to about 10 consecutive days is administered in a daily amount equivalent to about 10 pg to about 30 pg of ethinyl estradiol. - 99 33. The method of claim 32, wherein the combination of estrogen and progestin is administered for a period of about 81 to about 89 consecutive days.

34. The method of claim 28, wherein said female is a peri menopausal female.

35. The method of claim 28, wherein said female exhibits abnormal uterine bleeding.

36. The method of claim 35, wherein said abnormal uterine bleeding is menorrhagia.

37. A method of treating an ovarian cyst, uterine leiomyoma (fibroid tumor), or treating Polycystic Ovarian Disease in a female in need thereof, said method comprising administering to said female a combination of estrogen and progestin for a period of more than 20 consecutive days, followed by administration of estrogen for a period of about 2 to about 10 consecutive days.

38. The method of claim 37, wherein an antidepressant is administered (i) in combination with the estrogen for the period of about 2 to about 10 consecutive days, (ii) continuously, (iii) intermittently, (iv) one time, or (v) once weekly.

39. The method of claim 37, wherein the estrogen that is administered in combination with progestin for a period of more than 20 consecutive days is administered in a daily amount equivalent to about 5 pig to about 50 Rg of ethinyl estradiol, and the progestin that is administered in combination with estrogen for a period of more than 20 consecutive days is -100 administered in a daily amount equivalent to about 0.05 mg to about 1.5 mg of levonorgestrel.

40. The method of claim 39, wherein the estrogen that is administered for a period of about 2 to about 10 consecutive days is administered in a daily amount equivalent to about 5 ptg to about 50 pg of ethinyl estradiol.

41. The method of claim 40, wherein the combination of estrogen and progestin is administered for a period of about 60 to about 110 consecutive days.

42. The method of claim 41, wherein the combination of estrogen and progestin is administered for a period of about 81 to about 89 consecutive days.

43. The method of claim 40, wherein the combination of estrogen and progestin is administered for a period of about 21 to about 26 consecutive days.

44. The method of claim 40, wherein said female is a peri menopausal female.

45. The method of claim 40, wherein said female is a menopausal female.

46. A method of treating hirsutism in a female in need thereof, said method comprising administering. to said female a combination of estrogen and progestin for a period of more than 20 consecutive days, followed by administration of estrogen for a period of about 2 to about 10 consecutive days. -101

47. The method of claim 46, wherein an antidepressant is administered (i) in combination with the estrogen for the period of about 2 to about 10 consecutive days, (ii) continuously, (iii) intermittently, (iv) one time, or (v) once weekly.

48. The method of claim 46, wherein the estrogen that is administered in combination with progestin for a period of more than 20 consecutive days is administered in a daily amount equivalent to about 5 jg to about 50 pg of ethinyl estradiol, and the progestin that is administered in combination with estrogen for a period of more than 20 consecutive days is administered in a daily amount equivalent to about 0.05 mg to about 1.5 mg of levonorgestrel.

49. The method of claim 48, wherein the estrogen that is administered for a period of about 2 to about 10 consecutive days is administered in a daily amount equivalent to about 5 pg to about 50 pg of ethinyl estradiol.

50. The method of claim 649, wherein the combination of estrogen and progestin is administered for a period of about 60 to about 110 consecutive days.

51. The method of claim 50, wherein the combination of estrogen and progestin is administered for a period of about 81 to about 89 consecutive days.

52. The method of claim 49, wherein the combination of estrogen and progestin is administered for a period of about 21 to about 26 consecutive days.

53. The method of claim 49, wherein said female is a peri menopausal female. -102

54. The method of claim 49, wherein said female is a menopausal female.

55. A method of decreasing risk of iron deficiency anemia in a female in need thereof, said method comprising administering to the female a combination of estrogen and progestin for a period of about 81 to about 110 consecutive days, followed by administration of estrogen for a period of about 2 to about 10 consecutive days.

56. A method of decreasing risk of iron deficiency anemia in a female in need thereof, said method comprising administering to the female a combination of estrogen and progestin for a period of more than 20 consecutive days, followed by administration of estrogen for a period of about 2 to about 10 consecutive days., wherein an antidepressant is administered (i) in combination with the estrogen for the period of about 2 to about 10 consecutive days, (ii) continuously, (iii) intermittently, (iv) one time, or (v) once weekly.

57. The method of claim 55, wherein the estrogen that is administered in combination with progestin for a period of about 81 to about 110 consecutive days is administered in a daily amount equivalent to about 5 tg to about 50 pig of ethinyl estradiol, and the progestin that is administered in combination with estrogen for a period of about 81 to about 110 consecutive days is administered in a daily amount equivalent to about 0.05 mg to about 1.5 mg of levonorgestrel.

58. The method of claim 57, wherein the estrogen that is administered for a period of about 2 to about 10 consecutive days is administered in a daily amount equivalent to about 5 pg to about 50 pg of ethinyl estradiol. -103

59. The method of claim 57, wherein the estrogen that is administered for a period of about 2 to about 10 consecutive days is administered in a daily amount equivalent to about 10 ptg to about 30 pg of ethinyl estradiol.

60. The method of claim 59, wherein the combination of estrogen and progestin is administered for a period of about 81 to about 89 consecutive days.

61. The method of claim 58, wherein said female is a peri menopausal female.

62. A method of treating a menstrual disorder in a female in need thereof, said method comprising administering to the female a combination of estrogen and progestin for a period of about 81 to about 110 consecutive days, followed by administration of estrogen for a period of about 2 to about 10 consecutive days; wherein said menstrual disorder is selected from the group consisting of irregular menstrual cycles, dysmenorrhea, and mittelschmerz.

63. A method of treating a menstrual disorder in a female in need thereof, said method comprising administering to the female a combination of estrogen and progestin for a period of more than 20 consecutive days, followed by administration of estrogen for a period of about 2 to about 10 consecutive days, wherein an antidepressant is administered (i) in combination with the estrogen for the period of about 2 to about 10 consecutive days, (ii) continuously, (iii) intermittently, (iv) one time, or (v) once weekly; and wherein said menstrual disorder is selected from the group consisting of irregular menstrual cycles, dysmenorrhea, and mittelschmerz. -104

64. The method of claim 62, wherein the estrogen that is administered in combination with progestin for a period of about 81 to about 110 consecutive days is administered in a daily amount equivalent to about 5 p'g to about 50 pg of ethinyl estradiol, and the progestin that is administered in combination with estrogen for a period of about 81 to about 110 consecutive days is administered in a daily amount equivalent to about 0.05 mg to about 1.5 mg of levonorgestrel.

65. The method of claim 64, wherein the estrogen that is administered for a period of about 2 to about 10 consecutive days is administered in a daily amount equivalent to about 5 ig to about 50 pg of ethinyl estradiol.

66. The method of claim 64, wherein the estrogen that is administered for a period of about 2 to about 10 consecutive days is administered in a daily amount equivalent to about 10 [Lg to about 30 pg of ethinyl estradiol.

67. The method of claim 66, wherein the combination of estrogen and progestin is administered for a period of about 81 to about 89 consecutive days.

68. The method of claim 65, wherein said female is a peri menopausal female.

69. The method of claim 62, wherein said menstrual disorder is dysmenorrhea.

70. A method of treating acne in a female in need thereof, said method comprising administering to said female a combination of estrogen and progestin for a period of more than 20 consecutive days, followed by -105 administration of estrogen for a period of about 2 to about 10 consecutive days.

71. The method of claim 70, wherein an antidepressant is administered (i) in combination with the estrogen for the period of about 2 to about 10 consecutive days, (ii) continuously, (iii) intermittently, (iv) one time, or (v) once weekly.

72. The method of claim 70, wherein the estrogen that is administered in combination with progestin for a period of more than 20 consecutive days is administered in a daily amount equivalent to about 5 pg to about 50 ig of ethinyl estradiol, and the progestin that is administered in combination with estrogen for a period of more than 20 consecutive days is administered in a daily amount equivalent to about 0.05 mg to about 1.5 mg of levonorgestrel.

73. The method of claim 72, wherein the estrogen that is administered for a period of about 2 to about 10 consecutive days is administered in a daily amount equivalent to about 5 ig to about 50 jig of ethinyl estradiol.

74. The method of claim 72, wherein the estrogen that is administered for a period of about 2 to about 10 consecutive days is administered in a daily amount equivalent to about 10 pg to about 30 pg of ethinyl estradiol.

75. The method of claim 74, wherein the combination of estrogen and progestin is administered for a period of about 81 to about 89 consecutive days.

76. The method of claim 75, wherein said female is a peri menopausal female. -106

77. The method of claim 75, wherein said female is a menopausal female.

78. A method of treating endometriosis in a female in need thereof, said method comprising administering to said female a combination of estrogen and progestin for a period of more than 20 consecutive days, followed by administration of estrogen for a period of about 2 to about 10 consecutive days.

79. The method of claim 78, wherein an antidepressant is administered (i) in combination with the estrogen for the period of about 2 to about 10 consecutive days, (ii) continuously, (iii) intermittently, (iv) one time, or (v) once weekly. SO. The method of claim 78, wherein the estrogen that is administered in combination with progestin for a period of more than 20 consecutive days is administered in a daily amount equivalent to about 5 pg to about 50 pLg of ethinyl estradiol, and the progestin that is administered in combination with estrogen for a period of more than 20 consecutive days is administered in a daily amount equivalent to about 0.05 mg to about 1.5 mg of levonorgestrel.

81. The method of claim 80, wherein the estrogen that is administered for a period of about 2 to about 10 consecutive days is administered in a daily amount equivalent to about 5 sg to about 50 pg of ethinyl estradiol.

82. The method of claim 81, wherein the combination of estrogen and progestin is administered for a period of about 60 to about 110 consecutive days. -107

83. The method of claim 82, wherein the combination of estrogen and progestin is administered for a period of about 81 to about 89 consecutive days.

84. The method of claim 81, wherein the combination of estrogen and progestin is administered for a period of about 21 to about 26 consecutive days.

85. The method of claim 81, wherein said female is a peri menopausal female.

86. The method of claim 81, wherein said female is a menopausal female.

87. A method of reducing the risk of endometrial cancer in a female in need thereof, said method comprising administering to said female a combination of estrogen and progestin for a period of more than 20 consecutive days, followed by administration of estrogen for a period of about 2 to about 10 consecutive days.

88. The method of claim 87, wherein an antidepressant is administered (i) in combination with the estrogen for the period of about 2 to about 10 consecutive days, (ii) continuously, (iii) intermittently, (iv) one time, or (v) once weekly.

89. The method of claim 87, wherein the estrogen that is administered in combination with progestin for a period of more than 20 consecutive days is administered in a daily amount equivalent to about 5 pg to about 50 pg of ethinyl estradiol, and the progestin that is administered in combination with estrogen for a period of more than 20 consecutive days is administered in a daily amount equivalent to about 0.05 mg to about 1.5 mg of levonorgestrel. - 108 90. The method of claim 89, wherein the estrogen that is administered for a period of about 2 to about 10 consecutive days is administered in a daily amount equivalent to about 5 pg to about 50 pg of ethinyl estradiol.

91. The method of claim 90, wherein the combination of estrogen and progestin is administered for a period of about 60 to about 110 consecutive days.

92. The method of claim 91, wherein the combination of estrogen and progestin is administered for a period of about 81 to about 89 consecutive days.

93. The method of claim 90, wherein the combination of estrogen and progestin is administered for a period of about 21 to about 26 consecutive days.

94. The method of claim 90, wherein said female is a peri menopausal female.

95. The method of claim 90, wherein said female is a menopausal female.

96. A method of reducing the risk of ovarian cancer in a female in need thereof, said method comprising administering to said female a combination of estrogen and progestin for a period more than 20 consecutive days, followed by administration of estrogen for a period of about 2 to about 10 consecutive days.

97. The method of claim 96, wherein an antidepressant is administered (i) in combination with the estrogen for the period of about 2 to - 109 about 10 consecutive days, (ii) continuously, (iii) intermittently, (iv) one time, or (v) once weekly.

98. The method of claim 96, wherein the estrogen that is administered in combination with progestin for a period of more than 20 consecutive days is administered in a daily amount equivalent to about 5 Rg to about 50 pg of ethinyl estradiol, and the progestin that is administered in combination with estrogen for a period of more than 20 consecutive days is administered in a daily amount equivalent to about 0.05 mg to about 1.5 mg of levonorgestrel.

99. The method of claim 98, wherein the estrogen that is administered for a period of about 2 to about 10 consecutive days is administered in a daily amount equivalent to about 5 jig to about 50 pg of ethinyl estradiol.

100. The method of claim 99, wherein the combination of estrogen and progestin is administered for a period of about 60 to about 110 consecutive days.

101. The method of claim 100, wherein the combination of estrogen and progestin is administered for a period of about 81 to about 89 consecutive days.

102. The method of claim 99, wherein the combination of estrogen and progestin is administered for a period of about 21 to about 26 consecutive days.

103. The method of claim 99, wherein said female is a peri menopausal female. -110

104. The method of claim 99, wherein said female is a menopausal female.

105. A method of treating benign breast disease in a female in need thereof, said method comprising administering to said female a combination of estrogen and progestin for a period of more than 50 consecutive days, followed by administration of estrogen for a period of about 2 to about 10 consecutive days.

106. The method of claim 105, wherein an antidepressant is administered (i) in combination with the estrogen for the period of about 2 to about 10 consecutive days, (ii) continuously, (iii) intermittently, (iv) one time, or (v) once weekly.

107. The method of claim 105, wherein the estrogen that is administered in combination with progestin for a period of more than 50 consecutive days is administered in a daily amount equivalent to about 5 pig to about 50 pg of ethinyl estradiol, and the progestin that is administered in combination with estrogen for a period of more than 50 consecutive days is administered in a daily amount equivalent to about 0.05 mg to about 1.5 mg of levonorgestrel.

108. The method of claim 107, wherein the estrogen that is administered for a period of about 2 to about 10 consecutive days is administered in a daily amount equivalent to about 5 pg to about 50 pg of ethinyl estradiol.

109. The method of claim 108, wherein the combination of estrogen and progestin is administered for a period of about 60 to about 110 consecutive days. - 111 110. The method of claim 109, wherein the combination of estrogen and progestin is administered for a period of about 81 to about 89 consecutive days.

111. The method of claim 108, wherein the combination of estrogen and progestin is administered for a period of more than a year.

112. The method of claim 108, wherein said female is a peri menopausal female.

113. The method of claim 108, wherein said female is a menopausal female.

114. A method of reducing the risk of colorectal cancer in a female in need thereof, said method comprising administering to said female a combination of estrogen and progestin for a period of more than 20 consecutive days, followed by administration of estrogen for a period of about 2 to about 10 consecutive days.

115. The method of claim 114, wherein an antidepressant is administered (i) in combination with the estrogen for the period of about 2 to about 10 consecutive days, (ii) continuously, (iii) intermittently, (iv) one time, or (v) once weekly.

116. The method of claim 114, wherein the estrogen that is administered in combination with progestin for a period of more than 20 consecutive days is administered in a daily amount equivalent to about 5 pLg to about 50 4g of ethinyl estradiol, and the progestin that is administered in combination with estrogen for a period of more than 20 consecutive days is administered in a daily amount equivalent to about 0.05 mg to about 1.5 mg of levonorgestrel. -112

117. The method of claim 116, wherein the estrogen that is administered for a period of about 2 to about 10 consecutive days is administered in a daily amount equivalent to about 5 ig to about 50 pig of ethinyl estradiol. 11S. The method of claim 117, wherein the combination of estrogen and progestin is administered for a period of about 60 to about 110 consecutive days.

119. The method of claim 118, wherein the combination of estrogen and progestin is administered for a period of about 81 to about 89 consecutive days.

120. The method of claim 117, wherein the combination of estrogen and progestin is administered for a period of about 21 to about 26 consecutive days.

121. The method of claim 117, wherein said female is a peri menopausal female.

122. The method of claim 117, wherein said female is a menopausal female.

123. A method of treating an infection in a female in need thereof, said method comprising administering to the female a combination of estrogen and progestin for a period of more than 20 consecutive days, followed by administration of estrogen for a period of about 2 to about 10 consecutive days.

124. The method of claim 123, wherein an antidepressant is administered (i) in combination with the estrogen for the period of about 2 to -113 about 10 consecutive days, (ii) continuously, (iii) intermittently, (iv) one time, or (v) once weekly.

125. The method of claim 123, wherein the estrogen that is administered in combination with progestin for a period of more than 20 consecutive days is administered in a daily amount equivalent to about 5 jig to about 50 pg of ethinyl estradiol, and the progestin that is administered in combination with estrogen for a period of more than 20 consecutive days is administered in a daily amount equivalent to about 0.05 mg to about 1.5 mg of levonorgestrel.

126. The method of claim 125, wherein the estrogen that is administered for a period of about 2 to about 10 consecutive days is administered in a daily amount equivalent to about 5 gg to about 50 jig of ethinyl estradiol.

127. The method of claim 126, wherein the combination of estrogen and progestin is administered for a period of about 60 to about 110 consecutive days.

128. The method of claim 127, wherein the combination of estrogen and progestin is administered for a period of about 81 to about 89 consecutive days.

129. The method of claim 126, wherein the combination of estrogen and progestin is administered for a period of about 21 to about 26 consecutive days.

130. The method of claim 126, wherein said female is a peri menopausal female. -114

131. The method of claim 126, wherein said female is a menopausal female.

132. The method of claim 123, wherein said infection is Pelvic Inflammatory Disease.

133. The method of claim 123, wherein said infection is a sexually transmitted disease.

134. A method of treating temporomandibular disorder in a female in need thereof, said method comprising administering to said female a combination of estrogen and progestin for a period of more than 20 consecutive days, followed by administration of estrogen for a period of about 2 to about 10 consecutive days.

135. The method of claim 134, wherein an antidepressant is administered (i) in combination with the estrogen for the period of about 2 to about 10 consecutive days, (ii) continuously, (iii) intermittently, (iv) one time, or (v) once weekly.

136. The method of claim 134, wherein the estrogen that is administered in combination with progestin for a period of more than 20 consecutive days is administered in a daily amount equivalent to about 5 pIg to about 50 Rg of ethinyl estradiol, and the progestin that is administered in combination with estrogen for a period of more than 20 consecutive days is administered in a daily amount equivalent to about 0.05 mg to about 1.5 mg of levonorgestrel.

137. The method of claim 136, wherein the estrogen that is administered for a period of about 2 to about 10 consecutive days is administered in a daily amount equivalent to about 5 pg to about 50 pig of ethinyl estradiol. - 115 138. The method of claim 137, wherein the combination of estrogen and progestin is administered for a period of about 60 to about 110 consecutive days.

139. The method of claim 138, wherein the combination of estrogen and progestin is administered for a period of about 81 to about 89 consecutive days.

140. The method of claim 137, wherein the combination of estrogen and progestin is administered for a period of about 21 to about 26 consecutive days.

141. The method of claim 137, wherein said female is a peri menopausal female.

142. The method of claim 137, wherein said female is a menopausal female.

143. A method of treating a catamenial symptom in a female in need thereof, said method comprising administering to the female a combination of estrogen and progestin for a period of more than 20 consecutive days, followed by administration of estrogen for a period of about 2 to about 10 consecutive days.

144. The method of claim 143, wherein an antidepressant is administered (i) in combination with the estrogen for the period of about 2 to about 10 consecutive days, (ii) continuously, (iii) intermittently, (iv) one time, or (v) once weekly.

145. The method of claim 143, wherein the estrogen that is administered in combination with progestin for a period of more than 20 -116 consecutive days is administered in a daily amount equivalent to about 5 pg to about 50 pg of ethinyl estradiol, and the progestin that is administered in combination with estrogen for a period of more than 20 consecutive days is administered in a daily amount equivalent to about 0.05 mg to about 1.5 mg of levonorgestrel.

146. The method of claim 145, wherein the estrogen that is administered for a period of about 2 to about 10 consecutive days is administered in a daily amount equivalent to about 5 pg to about 50 pg of ethinyl estradiol.

147. The method of claim 146, wherein the combination of estrogen and progestin is administered for a period of about 60 to about 110 consecutive days.

148. The method of claim 147, wherein the combination of estrogen and progestin is administered for a period of about 81 to about 89 consecutive days.

149. The method of claim 146, wherein the combination of estrogen and progestin is administered for a period of about 21 to about 26 consecutive days.

150. The method of claim 146, wherein said female is a peri menopausal female.

151. The method of claim 143, wherein said catamenial symptom is a symptom associated with asthma, rheumatoid arthritis, seizure disorders, multiple sclerosis, diabetes, or migraine headache.

152. A method of treating non-menstrual related headache in a female in need thereof, said method comprising administering to the female a -117 combination of estrogen and progestin for a period of more than 20 consecutive days, followed.by administration of estrogen for a period of about 2 to about 10 consecutive days.

153. The method of claim 152, wherein an antidepressant is administered (i) in combination with the estrogen for the period of about 2 to about 10 consecutive days, (ii) continuously, (iii) intermittently, (iv) one time, or (v) once weekly.

154. The method of claim 152, wherein the estrogen that is administered in combination with progestin for a period of more than 20 consecutive days is administered in a daily amount equivalent to about 5 pg to about 50 gg of ethinyl estradiol, and the progestin that is administered in combination with estrogen for a period of more than 20 consecutive days is administered in a daily amount equivalent to about 0.05 mg to about 1.5 mg of levonorgestrel.

155. The method of claim 154, wherein the estrogen that is administered for a period of about 2 to about 10 consecutive days is administered in a daily amount equivalent to about 5 Rg to about 50 pg of ethinyl estradiol.

156. The method of claim 155, wherein the combination of estrogen and progestin is administered for a period of about 60 to about 110 consecutive days.

157. The method of claim 156, wherein the combination of estrogen and progestin is administered for a period of about 81 to about 89 consecutive days. -118

158. The method of claim 155, wherein the combination of estrogen and progestin is administered for a period of about 21 to about 26 consecutive days.

159. The method of claim 155, wherein said female is a peri menopausal female.

160. The method of claim 155, wherein said female is a menopausal female.

161. A method of treating non-menstrual related nausea in a female in need thereof, said method comprising administering to the female a combination of estrogen and progestin for a period of more than 20 consecutive days, followed by administration of estrogen for a period of about 2 to about 10 consecutive days.

162. The method of claim 161, wherein an antidepressant is administered (i) in combination with the estrogen for the period of about 2 to about 10 consecutive days, (ii) continuously, (iii) intermittently, (iv) one time, or (v) once weekly.

163. The method of claim 161, wherein the estrogen that is administered in combination with progestin for a period of more than 20 consecutive days is administered in a daily amount equivalent to about 5 pg to about 50 pg of ethinyl estradiol, and the progestin that is administered in combination with estrogen for a period of more than 20 consecutive days is administered in a daily amount equivalent to about 0.05 mg to about 1.5 mg of levonorgestrel.

164. The method of claim 163, wherein the estrogen that is administered for a period of about 2 to about 10 consecutive days is -119 administered in a daily amount equivalent to about 5 [ig to about 50 pg of ethinyl estradiol.

165. The method of claim 164, wherein the combination of estrogen and progestin is administered for a period of about 60 to about 110 consecutive days.

166. The method of claim 165, wherein the combination of estrogen and progestin is administered for a period of about 81 to about 89 consecutive days.

167. The method of claim 164, wherein the combination of estrogen and progestin is administered for a period of about 21 to about 26 consecutive days.

168. The method of claim 164, wherein said female is a peri menopausal female.

169. A method of treating non-menstrual related depression in a female in need thereof, said method comprising administering to the female a combination of estrogen and progestin for a period of more than 20 consecutive days, followed by administration of estrogen for a period of about 2 to about 10 consecutive days.

170. The method of claim 169, wherein an antidepressant is administered (i) in combination with the estrogen for the period of about 2 to about 10 consecutive days, (ii) continuously, (iii) intermittently, (iv) one time, or (v) once weekly.

171. The method of claim 169, wherein the estrogen that is administered in combination with progestin for a period of more than 20 consecutive days is administered in a daily amount equivalent to about 5 pg to -120 about 50 p±g of ethinyl estradiol, and the progestin that is administered in combination with estrogen for a period of more than 20 consecutive days is administered in a daily amount equivalent to about 0.05 mg to about 1.5 mg of levonorgestrel.

172. The method of claim 171, wherein the estrogen that is administered for a period of about 2 to about 10 consecutive days is administered in a daily amount equivalent to about 5 pg to about 50 pg of ethinyl estradiol.

173. The method of claim 172, wherein the combination of estrogen and progestin is administered for a period of about 60 to about 110 consecutive days.

174. The method of claim 173, wherein the combination of estrogen and progestin is administered for a period of about 81 to about 89 consecutive days.

175. The method of claim 172, wherein the combination of estrogen and progestin is administered for a period of about 21 to about 26 consecutive days.

176. The method of claim 172, wherein said female is a peri menopausal female.

177. The method of claim 172, wherein said female is a menopausal female.

178. A method of increasing contraceptive effectiveness in a higher weight female in need thereof, said method comprising administering to the female a combination of estrogen and progestin for a period of more than 50 consecutive days, followed by administration of estrogen for a period of about - 121 2 to about 10 consecutive days; wherein said higher weight female weighs about 70 kg or more.

179. The method of claim 178, wherein an antidepressant is administered (i) in combination with the estrogen for the period of about 2 to about 10 consecutive days, (ii) continuously, (iii) intermittently, (iv) one time, or (v) once weekly.

180. The method of claim 178, wherein the estrogen that is administered in combination with progestin for a period of more than 50 consecutive days is administered in a daily amount equivalent to about 5 pg to about 50 pg of ethinyl estradiol, and the progestin that is administered in combination with estrogen for a period of more than 50 consecutive days is administered in a daily amount equivalent to about 0.05 mg to about 1.5 mg of levonorgestrel.

181. The method of claim 180, wherein the estrogen that is administered for a period of about 2 to about 10 consecutive days is administered in a daily amount equivalent to about 5 pg to about 50 jig of ethinyl estradiol.

182. The method of claim 181, wherein the combination of estrogen and progestin is administered for a period of about 60 to about 110 consecutive days.

183. The method of claim 182, wherein the combination of estrogen and progestin is administered for a period of about 81 to about 89 consecutive days.

184. The method of claim 181, wherein said female is a peri menopausal female. - 122 185. A method of increasing fertility in a female in need thereof, the method comprising: (i) administration to the female of a combination of estrogen and progestin for a period of more than 20 consecutive days, followed by administration of estrogen for a period of about 2 to about 10 consecutive days; (ii) discontinuation of administration of the combination of estrogen and progestin for the period of more than 20 consecutive days and of estrogen for the period of about 2 to about 10 consecutive days; and (iii) optional administration to the female of an ovulation-inducing agent during the discontinuation of administration of the combination of estrogen and progestin for the period of more than 20 consecutive days and of estrogen for the period of about 2 to about 10 consecutive days; wherein fertility in the female is increased.

186. The method of claim 1 S5, wherein the ovulation-inducing agent is administered to the female during the discontinuation of administration in (ii) of the combination of estrogen and progestin for the period of more than 20 consecutive days, and of the estrogen for the period of about 2 to about 10 consecutive days.

187. The method of claim 186, wherein the ovulation-inducing agent is chlomiphene citrate or menotropins.

188. A method of treating or diminishing a perimenopausal symptom in a female in need thereof, said method comprising administering to said female a combination of estrogen and progestin for a period of more than 20 consecutive days, followed by administration of estrogen for a period of about 2 to about 10 consecutive days.

189. The method of claim 188, wherein an antidepressant is administered (i) in combination with the estrogen for the period of about 2 to - 123 about 10 consecutive days, (ii) continuously, (iii) intermittently, (iv) one time, or (v) once weekly.

190. The method of claim 188, wherein the estrogen that is administered in combination with progestin for a period of more than 20 consecutive days is administered in a daily amount equivalent to about 5 ig to about 50 pg of ethinyl estradiol, and the progestin that is administered in combination with estrogen for a period of more than 20 consecutive days is administered in a daily amount equivalent to about 0.05 mg to about 1.5 mg of levonorgestrel.

191. The method of claim 190, wherein the estrogen that is administered for a period of about 2 to about 10 consecutive days is administered in a daily amount equivalent to about 5 4g to about 50 pg of ethinyl estradiol.

192. The method of claim 191, wherein the combination of estrogen and progestin is administered for a period of about 60 to about 110 consecutive days.

193. The method of claim 192, wherein the combination of estrogen and progestin is administered for a period of about 81 to about 89 consecutive days.

194. The method of claim 191, wherein the combination of estrogen and progestin is administered for a period of about 21 to about 26 consecutive days.

195. The method of claim 191, wherein said perimenopausal symptom is selected from the group consisting of hot flushes, dryness of the vagina, and osteoporosis. -124

196. A method for treating a condition resulting from menopausal estrogen decline in a menopausal female, said method comprising administering to the female a combination of estrogen and progestin for a period of more than 20 consecutive days, followed by administration of estrogen for a period of about 2 to about 10 consecutive days.

197. The method of claim 196, wherein an antidepressant is administered (i) in combination with the estrogen for the period of about 2 to about 10 consecutive days, (ii) continuously, (iii) intermittently, (iv) one time, or (v) once weekly.

198. The method of claim 196, wherein the estrogen that is administered in combination with progestin for a period of more than 20 consecutive days is administered in a daily amount equivalent to about 5 jpg to about 50 pg of ethinyl estradiol, and the progestin that is administered in combination with estrogen for a period of more than 20 consecutive days is administered in a daily amount equivalent to about 0.05 mg to about 1.5 mg of levonorgestrel.

199. The method of claim 198, wherein the estrogen that is administered for a period of about 2 to about 10 consecutive days is administered in a daily amount equivalent to about 5 pg to about 50 ig of ethinyl estradiol.

200. The method of claim 199, wherein the combination of estrogen and progestin is administered for a period of about 60 to about 110 consecutive days.

201. The method of claim 200, wherein the combination of estrogen and progestin is administered for a period of about 81 to about 89 consecutive days. - 125 202. The method of claim 199, wherein the combination of estrogen and progestin is administered for a period of about 21 to about 26 consecutive days.

203. A method of treating hypoestrogenism in a female in need thereof, said method comprising administering to said female a combination of estrogen and progestin for a period of more than 20 consecutive days, followed by administration of estrogen for a period of about 2 to about 10 consecutive days.

204. The method of claim 203, wherein an antidepressant is administered (i) in combination with the estrogen for the period of about 2 to about 10 consecutive days, (ii) continuously, (iii) intermittently, (iv) one time, or (v) once weekly.

205. The method of claim 203, wherein the estrogen that is administered in combination with progestin for a period of more than 20 consecutive days is administered in a daily amount equivalent to about 5 pg to about 50 gg of ethinyl estradiol, and the progestin that is administered in combination with estrogen for a period of more than 20 consecutive days is administered in a daily amount equivalent to about 0.05 mg to about 1.5 mg of levonorgestrel.

206. The method of claim 205, wherein the estrogen that is administered for a period of about 2 to about 10 consecutive days is administered in a daily amount equivalent to about 5 pig to about 50 pg of ethinyl estradiol.

207. The method of claim 206, wherein the combination of estrogen and progestin is administered for a period of about 60 to about 110 consecutive days. -126

208. The method of claim 207, wherein the combination of estrogen and progestin is administered for a period of about 81 to about 89 consecutive days.

209. The method of claim 206, wherein the combination of estrogen and progestin is administered for a period of about 21 to about 26 consecutive days.

210. The method of claim 206, wherein said female is a peri menopausal female.

211. The method of claim 206, wherein said female is a menopausal female.

212. A method of treating a menopausal disorder in a female in need thereof, said method comprising administering to the female a combination of estrogen and progestin for a period of more than 20 consecutive days, followed by administration of estrogen for a period of about 2 to about 10 consecutive days.

213. The method of claim 212, wherein an antidepressant is administered (i) in combination with the estrogen for the period of about 2 to about 10 consecutive days, (ii) continuously, (iii) intermittently, (iv) one time, or (v) once weekly.

214. The method of claim 212, wherein the estrogen that is administered in combination with progestin for a period of more than 20 consecutive days is administered in a daily amount equivalent to about 5 pg to about 50 pg of ethinyl estradiol, and the progestin that is administered in combination with estrogen for a period of more than 20 consecutive days is administered in a daily amount equivalent to about 0.05 mg to about 1.5 mg of levonorgestrel. - 127 215. The method of claim 214, wherein the estrogen that is administered for a period of about 2 to about 10 consecutive days is administered in a daily amount equivalent to about 5 pg to about 50 pg of ethinyl estradiol.

216. The method of claim 215, wherein the combination of estrogen and progestin is administered for a period of about 60 to about 110 consecutive days.

217. The method of claim 216, wherein the combination of estrogen and progestin is administered for a period of about 81 to about 89 consecutive days.

218. The method of claim 215, wherein the combination of estrogen and progestin is administered for a period of about 21 to about 26 consecutive days.

219. A method of maintaining bone density or preventing loss of bone density in a female in need thereof, said method comprising administering to the female a combination of estrogen and progestin for a period of more than 20 consecutive days, followed by administration of estrogen for a period of about 2 to about 10 consecutive days.

220. The method of claim 219, wherein an antidepressant is administered (i) in combination with the estrogen for the period of about 2 to about 10 consecutive days, (ii) continuously, (iii) intermittently, (iv) one time, or (v) once weekly.

221. The method of claim 219, wherein the estrogen that is administered in combination with progestin for a period of more than 20 consecutive days is administered in a daily amount equivalent to about 5 pg to - 128 about 50 pg of ethinyl estradiol, and the progestin that is administered in combination with estrogen for a period of more than 20 consecutive days is administered in a daily amount equivalent to about 0.05 mg to about 1.5 mg of levonorgestrel.

222. The method of claim 221, wherein the estrogen that is administered for a period of about 2 to about 10 consecutive days is administered in a daily amount equivalent to about 5 pg to about 50 pg of ethinyl estradiol.

223. The method of claim 222, wherein the combination of estrogen and progestin is administered for a period of about 60 to about 110 consecutive days.

224. The method of claim 223, wherein the combination of estrogen and progestin is administered for a period of about 81 to about 89 consecutive days.

225. The method of claim 222, wherein the combination of estrogen and progestin is administered for a period of about 21 to about 26 consecutive days.

226. The method of claim 222, wherein said female is a peri menopausal female.

227. The method of claim 222, wherein said female is a menopausal female.

228. A method of treating a female in need of hormone replacement therapy, said method comprising administering to the female a combination of estrogen and progestin for a period of more than 20 consecutive days, -129 followed by administration of estrogen for a period of about 2 to about 10 consecutive days.

229. The method of claim 228, wherein an antidepressant is administered (i) in combination with the estrogen for the period of about 2 to about 10 consecutive days, (ii) continuously, (iii) intermittently, (iv) one time, or (v) once weekly.

230. The method of claim 228, wherein the estrogen that is administered in combination with progestin for a period of more than 20 consecutive days is administered in a daily amount equivalent to about 5 jig to about 50 pig of ethinyl estradiol, and the progestin that is administered in combination with estrogen for a period of more than 20 consecutive days is administered in a daily amount equivalent to about 0.05 mg to about 1.5 mg of levonorgestrel.

231. The method of claim 230, wherein the estrogen that is administered for a period of about 2 to about 10 consecutive days is administered in a daily amount equivalent to about 5 pg to about 50 pg of ethinyl estradiol.

232. The method of claim 231, wherein the combination of estrogen and progestin is administered for a period of about 60 to about 110 consecutive days.

233. The method of claim 232, wherein the combination of estrogen and progestin is administered for a period of about 81 to about 89 consecutive days.

234. The method of claim 231, wherein the combination of estrogen and progestin is administered for a period of about 21 to about 26 consecutive days. -130

235. The method of claim 25, wherein said female is a peri menopausal female.

236. The method of claim 31, wherein said female is a menopausal female.

237. The method of claim 164, wherein said female is a menopausal female.